forked from lix-project/hydra
Kill active build steps when builds are cancelled
We now kill active build steps when there are no more referring builds. This is useful e.g. for preventing cancelled multi-hour TPC-H benchmark runs from hogging build machines.
This commit is contained in:
Eelco Dolstra
parent
a816ef873d
commit
b3169ce438
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@ -13,7 +13,14 @@ void State::builder(MachineReservation::ptr reservation)
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nrStepsStarted++;
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MaintainCount mc(nrActiveSteps);
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reservation->threadId = pthread_self();
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activeSteps_.lock()->insert(reservation);
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Finally removeActiveStep([&]() {
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reservation->threadId = -1;
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activeSteps_.lock()->erase(reservation);
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});
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auto step = reservation->step;
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@ -63,8 +70,15 @@ State::StepResult State::doBuildStep(nix::ref<Store> destStore, Step::ptr step,
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purpose of creating build steps. We could create a build step
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record for every build, but that could be very expensive
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(e.g. a stdenv derivation can be a dependency of tens of
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thousands of builds), so we don't. */
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Build::ptr build;
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thousands of builds), so we don't.
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We don't keep a Build::ptr here to allow
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State::processQueueChange() to detect whether a step can be
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cancelled (namely if there are no more Builds referring to
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it). */
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BuildID buildId;
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Path buildDrvPath;
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unsigned int maxSilentTime, buildTimeout;
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{
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std::set<Build::ptr> dependents;
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@ -85,6 +99,8 @@ State::StepResult State::doBuildStep(nix::ref<Store> destStore, Step::ptr step,
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return sMaybeCancelled;
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}
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Build::ptr build;
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for (auto build2 : dependents) {
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if (build2->drvPath == step->drvPath) {
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build = build2;
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@ -93,11 +109,16 @@ State::StepResult State::doBuildStep(nix::ref<Store> destStore, Step::ptr step,
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}
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if (!build) build = *dependents.begin();
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buildId = build->id;
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buildDrvPath = build->drvPath;
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maxSilentTime = build->maxSilentTime;
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buildTimeout = build->buildTimeout;
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printMsg(lvlInfo, format("performing step ‘%1%’ on ‘%2%’ (needed by build %3% and %4% others)")
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% step->drvPath % machine->sshName % build->id % (dependents.size() - 1));
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% step->drvPath % machine->sshName % buildId % (dependents.size() - 1));
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}
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bool quit = build->id == buildOne && step->drvPath == build->drvPath;
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bool quit = buildId == buildOne && step->drvPath == buildDrvPath;
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auto conn(dbPool.get());
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@ -108,9 +129,9 @@ State::StepResult State::doBuildStep(nix::ref<Store> destStore, Step::ptr step,
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Finally clearStep([&]() {
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if (stepNr && !stepFinished) {
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printError("marking step %d of build %d as orphaned", stepNr, build->id);
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printError("marking step %d of build %d as orphaned", stepNr, buildId);
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auto orphanedSteps_(orphanedSteps.lock());
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orphanedSteps_->emplace(build->id, stepNr);
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orphanedSteps_->emplace(buildId, stepNr);
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}
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});
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@ -127,20 +148,33 @@ State::StepResult State::doBuildStep(nix::ref<Store> destStore, Step::ptr step,
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{
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auto mc = startDbUpdate();
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pqxx::work txn(*conn);
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stepNr = createBuildStep(txn, result.startTime, build, step, machine->sshName, bsBusy);
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stepNr = createBuildStep(txn, result.startTime, buildId, step, machine->sshName, bsBusy);
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txn.commit();
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}
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/* Do the build. */
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try {
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/* FIXME: referring builds may have conflicting timeouts. */
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buildRemote(destStore, machine, step, build->maxSilentTime, build->buildTimeout, result);
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buildRemote(destStore, machine, step, maxSilentTime, buildTimeout, result);
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} catch (NoTokens & e) {
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result.stepStatus = bsNarSizeLimitExceeded;
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} catch (Error & e) {
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result.stepStatus = bsAborted;
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result.errorMsg = e.msg();
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result.canRetry = true;
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} catch (__cxxabiv1::__forced_unwind & e) {
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/* The queue monitor thread cancelled this step. */
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try {
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printInfo("marking step %d of build %d as succeeded", stepNr, buildId);
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pqxx::work txn(*conn);
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finishBuildStep(txn, result.startTime, time(0), result.overhead, buildId,
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stepNr, machine->sshName, bsCancelled, "");
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txn.commit();
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stepFinished = true;
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} catch (...) {
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ignoreException();
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}
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throw;
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}
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if (result.stepStatus == bsSuccess)
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@ -167,7 +201,7 @@ State::StepResult State::doBuildStep(nix::ref<Store> destStore, Step::ptr step,
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{
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auto logCompressorQueue_(logCompressorQueue.lock());
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assert(stepNr);
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logCompressorQueue_->push({build->id, stepNr, result.logFile});
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logCompressorQueue_->push({buildId, stepNr, result.logFile});
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}
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logCompressorWakeup.notify_one();
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}
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@ -187,7 +221,7 @@ State::StepResult State::doBuildStep(nix::ref<Store> destStore, Step::ptr step,
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auto mc = startDbUpdate();
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{
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pqxx::work txn(*conn);
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finishBuildStep(txn, result.startTime, result.stopTime, result.overhead, build->id,
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finishBuildStep(txn, result.startTime, result.stopTime, result.overhead, buildId,
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stepNr, machine->sshName, result.stepStatus, result.errorMsg);
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txn.commit();
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}
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@ -243,11 +277,11 @@ State::StepResult State::doBuildStep(nix::ref<Store> destStore, Step::ptr step,
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pqxx::work txn(*conn);
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finishBuildStep(txn, result.startTime, result.stopTime, result.overhead,
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build->id, stepNr, machine->sshName, bsSuccess);
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buildId, stepNr, machine->sshName, bsSuccess);
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for (auto & b : direct) {
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printMsg(lvlInfo, format("marking build %1% as succeeded") % b->id);
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markSucceededBuild(txn, b, res, build != b || result.isCached,
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markSucceededBuild(txn, b, res, buildId != b->id || result.isCached,
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result.startTime, result.stopTime);
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}
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@ -340,17 +374,17 @@ State::StepResult State::doBuildStep(nix::ref<Store> destStore, Step::ptr step,
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redundant with the build's isCachedBuild field). */
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for (auto & build2 : indirect) {
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if ((result.stepStatus == bsCachedFailure && build2->drvPath == step->drvPath) ||
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(result.stepStatus != bsCachedFailure && build == build2) ||
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(result.stepStatus != bsCachedFailure && buildId == build2->id) ||
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build2->finishedInDB)
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continue;
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createBuildStep(txn, 0, build2, step, machine->sshName,
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result.stepStatus, result.errorMsg, build == build2 ? 0 : build->id);
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createBuildStep(txn, 0, build2->id, step, machine->sshName,
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result.stepStatus, result.errorMsg, buildId == build2->id ? 0 : buildId);
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}
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if (result.stepStatus != bsCachedFailure && !stepFinished) {
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assert(stepNr);
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finishBuildStep(txn, result.startTime, result.stopTime, result.overhead,
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build->id, stepNr, machine->sshName, result.stepStatus, result.errorMsg);
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buildId, stepNr, machine->sshName, result.stepStatus, result.errorMsg);
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}
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/* Mark all builds that depend on this derivation as failed. */
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@ -392,7 +426,7 @@ State::StepResult State::doBuildStep(nix::ref<Store> destStore, Step::ptr step,
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/* Send notification about this build and its dependents. */
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{
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auto notificationSenderQueue_(notificationSenderQueue.lock());
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notificationSenderQueue_->push(NotificationItem{NotificationItem::Type::BuildFinished, build->id, dependentIDs});
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notificationSenderQueue_->push(NotificationItem{NotificationItem::Type::BuildFinished, buildId, dependentIDs});
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}
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notificationSenderWakeup.notify_one();
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@ -224,25 +224,25 @@ void State::clearBusy(Connection & conn, time_t stopTime)
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}
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unsigned int State::allocBuildStep(pqxx::work & txn, Build::ptr build)
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unsigned int State::allocBuildStep(pqxx::work & txn, BuildID buildId)
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{
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/* Acquire an exclusive lock on BuildSteps to ensure that we don't
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race with other threads creating a step of the same build. */
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txn.exec("lock table BuildSteps in exclusive mode");
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auto res = txn.parameterized("select max(stepnr) from BuildSteps where build = $1")(build->id).exec();
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auto res = txn.parameterized("select max(stepnr) from BuildSteps where build = $1")(buildId).exec();
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return res[0][0].is_null() ? 1 : res[0][0].as<int>() + 1;
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}
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unsigned int State::createBuildStep(pqxx::work & txn, time_t startTime, Build::ptr build, Step::ptr step,
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unsigned int State::createBuildStep(pqxx::work & txn, time_t startTime, BuildID buildId, Step::ptr step,
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const std::string & machine, BuildStatus status, const std::string & errorMsg, BuildID propagatedFrom)
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{
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unsigned int stepNr = allocBuildStep(txn, build);
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auto stepNr = allocBuildStep(txn, buildId);
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txn.parameterized
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("insert into BuildSteps (build, stepnr, type, drvPath, busy, startTime, system, status, propagatedFrom, errorMsg, stopTime, machine) values ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12)")
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(build->id)
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(buildId)
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(stepNr)
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(0) // == build
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(step->drvPath)
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@ -258,7 +258,7 @@ unsigned int State::createBuildStep(pqxx::work & txn, time_t startTime, Build::p
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for (auto & output : step->drv.outputs)
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txn.parameterized
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("insert into BuildStepOutputs (build, stepnr, name, path) values ($1, $2, $3, $4)")
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(build->id)(stepNr)(output.first)(output.second.path).exec();
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(buildId)(stepNr)(output.first)(output.second.path).exec();
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return stepNr;
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}
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@ -284,7 +284,7 @@ void State::finishBuildStep(pqxx::work & txn, time_t startTime, time_t stopTime,
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int State::createSubstitutionStep(pqxx::work & txn, time_t startTime, time_t stopTime,
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Build::ptr build, const Path & drvPath, const string & outputName, const Path & storePath)
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{
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int stepNr = allocBuildStep(txn, build);
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auto stepNr = allocBuildStep(txn, build->id);
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txn.parameterized
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("insert into BuildSteps (build, stepnr, type, drvPath, busy, status, startTime, stopTime) values ($1, $2, $3, $4, $5, $6, $7, $8)")
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@ -574,7 +574,7 @@ void State::dumpStatus(Connection & conn, bool log)
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if (i->lock()) ++i; else i = runnable_->erase(i);
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root.attr("nrRunnableSteps", runnable_->size());
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}
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root.attr("nrActiveSteps", nrActiveSteps);
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root.attr("nrActiveSteps", activeSteps_.lock()->size());
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root.attr("nrStepsBuilding", nrStepsBuilding);
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root.attr("nrStepsCopyingTo", nrStepsCopyingTo);
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root.attr("nrStepsCopyingFrom", nrStepsCopyingFrom);
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@ -2,6 +2,8 @@
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#include "build-result.hh"
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#include "globals.hh"
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#include <cstring>
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using namespace nix;
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@ -180,7 +182,7 @@ bool State::getQueuedBuilds(Connection & conn,
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}
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}
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createBuildStep(txn, 0, build, ex.step, "", bsCachedFailure, "", propagatedFrom);
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createBuildStep(txn, 0, build->id, ex.step, "", bsCachedFailure, "", propagatedFrom);
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txn.parameterized
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("update Builds set finished = 1, buildStatus = $2, startTime = $3, stopTime = $3, isCachedBuild = 1 where id = $1 and finished = 0")
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(build->id)
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@ -312,6 +314,7 @@ void State::processQueueChange(Connection & conn)
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currentIds[row["id"].as<BuildID>()] = row["globalPriority"].as<BuildID>();
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}
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{
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auto builds_(builds.lock());
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for (auto i = builds_->begin(); i != builds_->end(); ) {
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@ -331,6 +334,27 @@ void State::processQueueChange(Connection & conn)
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}
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}
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{
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auto activeSteps(activeSteps_.lock());
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for (auto & activeStep : *activeSteps) {
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auto threadId = activeStep->threadId; // FIXME: use Sync or atomic?
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if (threadId == 0) continue;
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std::set<Build::ptr> dependents;
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std::set<Step::ptr> steps;
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getDependents(activeStep->step, dependents, steps);
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if (!dependents.empty()) continue;
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printInfo("cancelling thread for build step ‘%s’", activeStep->step->drvPath);
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int err = pthread_cancel(threadId);
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if (err)
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printError("error cancelling thread for build step ‘%s’: %s",
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activeStep->step->drvPath, strerror(err));
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}
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}
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}
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Step::ptr State::createStep(ref<Store> destStore,
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Connection & conn, Build::ptr build, const Path & drvPath,
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@ -28,6 +28,7 @@ typedef enum {
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bsFailed = 1,
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bsDepFailed = 2, // builds only
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bsAborted = 3,
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bsCancelled = 4,
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bsFailedWithOutput = 6, // builds only
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bsTimedOut = 7,
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bsCachedFailure = 8, // steps only
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@ -296,7 +297,6 @@ private:
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counter nrBuildsDone{0};
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counter nrStepsStarted{0};
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counter nrStepsDone{0};
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counter nrActiveSteps{0};
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counter nrStepsBuilding{0};
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counter nrStepsCopyingTo{0};
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counter nrStepsCopyingFrom{0};
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@ -370,10 +370,14 @@ private:
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State & state;
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Step::ptr step;
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Machine::ptr machine;
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pthread_t threadId = 0;
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bool cancelled = false;
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MachineReservation(State & state, Step::ptr step, Machine::ptr machine);
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~MachineReservation();
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};
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nix::Sync<std::set<std::shared_ptr<MachineReservation>>> activeSteps_;
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std::atomic<time_t> lastDispatcherCheck{0};
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std::shared_ptr<nix::Store> localStore;
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@ -413,9 +417,9 @@ private:
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/* Thread to reload /etc/nix/machines periodically. */
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void monitorMachinesFile();
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unsigned int allocBuildStep(pqxx::work & txn, Build::ptr build);
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unsigned int allocBuildStep(pqxx::work & txn, BuildID buildId);
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unsigned int createBuildStep(pqxx::work & txn, time_t startTime, Build::ptr build, Step::ptr step,
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unsigned int createBuildStep(pqxx::work & txn, time_t startTime, BuildID buildId, Step::ptr step,
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const std::string & machine, BuildStatus status, const std::string & errorMsg = "",
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BuildID propagatedFrom = 0);
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@ -23,7 +23,7 @@ FOR step IN steps; IF step.busy; busy = 1; END; END;
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</thead>
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<tbody>
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[% FOREACH step IN steps %]
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[% IF ( type == "All" ) || ( type == "Failed" && step.status != 0 ) || ( type == "Running" && step.busy == 1 ) %]
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[% IF ( type == "All" ) || ( type == "Failed" && step.busy == 0 && step.status != 0 ) || ( type == "Running" && step.busy == 1 ) %]
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[% has_log = seen.${step.drvpath} ? 0 : buildStepLogExists(step);
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seen.${step.drvpath} = 1;
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log = c.uri_for('/build' build.id 'nixlog' step.stepnr); %]
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@ -49,7 +49,7 @@ FOR step IN steps; IF step.busy; busy = 1; END; END;
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INCLUDE renderDuration duration = curTime - step.starttime;
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END %]
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</td>
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<td>[% IF step.busy == 1 || ((step.machine || step.starttime) && (step.status == 0 || step.status == 1 || step.status == 3 || step.status == 7)); INCLUDE renderMachineName machine=step.machine; ELSE; "<em>n/a</em>"; END %]</td>
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<td>[% IF step.busy == 1 || ((step.machine || step.starttime) && (step.status == 0 || step.status == 1 || step.status == 3 || step.status == 4 || step.status == 7)); INCLUDE renderMachineName machine=step.machine; ELSE; "<em>n/a</em>"; END %]</td>
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<td>
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[% IF step.busy == 1 %]
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<strong>Building</strong>
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@ -57,6 +57,8 @@ FOR step IN steps; IF step.busy; busy = 1; END; END;
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Succeeded
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[% ELSIF step.status == 3 %]
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<span class="error"><strong>Aborted</strong>[% IF step.errormsg %]: [% HTML.escape(step.errormsg); END %]</span>
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[% ELSIF step.status == 4 %]
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<span class="error">Cancelled</span>
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[% ELSIF step.status == 7 %]
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<span class="error">Timed out</span>
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[% ELSIF step.status == 8 %]
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@ -242,7 +244,7 @@ FOR step IN steps; IF step.busy; busy = 1; END; END;
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[% IF build.finished %]
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[% IF steps && build.buildstatus != 0 && build.buildstatus != 6 %]
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[% IF steps && build.buildstatus != 0 && build.buildstatus != 4 && build.buildstatus != 6 %]
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<h3>Failed build steps</h3>
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[% INCLUDE renderBuildSteps type="Failed" %]
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[% END %]
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@ -203,7 +203,7 @@ create table Builds (
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-- 1 = regular Nix failure (derivation returned non-zero exit code)
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-- 2 = build of a dependency failed [builds only]
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-- 3 = build or step aborted due to misc failure
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-- 4 = build cancelled (removed from queue; never built) [builds only]
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-- 4 = build or step cancelled
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-- 5 = [obsolete]
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-- 6 = failure with output (i.e. $out/nix-support/failed exists) [builds only]
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-- 7 = build timed out
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