Examples with Util.doWithClassLoader com.hazelcast.jet.impl.util.Util.doWithClassLoader used on opensource projects

Example 1 with Util.doWithClassLoader

use of com.hazelcast.jet.impl.util.Util.doWithClassLoader in project hazelcast by hazelcast.

the class MasterJobContext method tryStartJob.

/**
 * Starts the execution of the job if it is not already completed,
 * cancelled or failed.
 * <p>
 * If the job is already cancelled, triggers the job completion procedure.
 * <p>
 * If the job quorum is not satisfied, reschedules the job restart.
 * <p>
 * If there was a membership change and the partition table is not completely
 * fixed yet, reschedules the job restart.
 */
void tryStartJob(Supplier<Long> executionIdSupplier) {
    mc.coordinationService().submitToCoordinatorThread(() -> {
        executionStartTime = System.currentTimeMillis();
        try {
            JobExecutionRecord jobExecRec = mc.jobExecutionRecord();
            jobExecRec.markExecuted();
            Tuple2<DAG, ClassLoader> dagAndClassloader = resolveDagAndCL(executionIdSupplier);
            if (dagAndClassloader == null) {
                return;
            }
            DAG dag = dagAndClassloader.f0();
            assert dag != null;
            ClassLoader classLoader = dagAndClassloader.f1();
            // must call this before rewriteDagWithSnapshotRestore()
            String dotRepresentation = dag.toDotString(defaultParallelism, defaultQueueSize);
            long snapshotId = jobExecRec.snapshotId();
            String snapshotName = mc.jobConfig().getInitialSnapshotName();
            String mapName = snapshotId >= 0 ? jobExecRec.successfulSnapshotDataMapName(mc.jobId()) : snapshotName != null ? EXPORTED_SNAPSHOTS_PREFIX + snapshotName : null;
            if (mapName != null) {
                rewriteDagWithSnapshotRestore(dag, snapshotId, mapName, snapshotName);
            } else {
                logger.info("Didn't find any snapshot to restore for " + mc.jobIdString());
            }
            MembersView membersView = Util.getMembersView(mc.nodeEngine());
            logger.info("Start executing " + mc.jobIdString() + ", execution graph in DOT format:\n" + dotRepresentation + "\nHINT: You can use graphviz or http://viz-js.com to visualize the printed graph.");
            logger.fine("Building execution plan for " + mc.jobIdString());
            Util.doWithClassLoader(classLoader, () -> mc.setExecutionPlanMap(createExecutionPlans(mc.nodeEngine(), membersView.getMembers(), dag, mc.jobId(), mc.executionId(), mc.jobConfig(), jobExecRec.ongoingSnapshotId(), false, mc.jobRecord().getSubject())));
            logger.fine("Built execution plans for " + mc.jobIdString());
            Set<MemberInfo> participants = mc.executionPlanMap().keySet();
            Version coordinatorVersion = mc.nodeEngine().getLocalMember().getVersion().asVersion();
            Function<ExecutionPlan, Operation> operationCtor = plan -> new InitExecutionOperation(mc.jobId(), mc.executionId(), membersView.getVersion(), coordinatorVersion, participants, mc.nodeEngine().getSerializationService().toData(plan), false);
            mc.invokeOnParticipants(operationCtor, this::onInitStepCompleted, null, false);
        } catch (Throwable e) {
            finalizeJob(e);
        }
    });
}