Examples with SnapshotPhase2Operation com.hazelcast.jet.impl.operation.SnapshotPhase2Operation used on opensource projects

Example 1 with SnapshotPhase2Operation

use of com.hazelcast.jet.impl.operation.SnapshotPhase2Operation in project hazelcast by hazelcast.

the class MasterSnapshotContext method onSnapshotPhase1CompleteWithStartResponses.

private void onSnapshotPhase1CompleteWithStartResponses(Collection<Entry<MemberInfo, Object>> responses, long executionId, long snapshotId, String snapshotMapName, int snapshotFlags, @Nullable CompletableFuture<Void> future, SnapshotPhase1Result mergedResult, List<CompletableFuture<Void>> missingResponses) {
    mc.coordinationService().submitToCoordinatorThread(() -> {
        mc.lock();
        boolean isSuccess;
        SnapshotStats stats;
        try {
            if (!missingResponses.isEmpty()) {
                LoggingUtil.logFine(logger, "%s all awaited responses to StartExecutionOperation received or " + "were already received", mc.jobIdString());
            }
            // Check the execution ID to check if a new execution didn't start yet.
            if (executionId != mc.executionId()) {
                LoggingUtil.logFine(logger, "%s: ignoring responses for snapshot %s phase 1: " + "the responses are from a different execution: %s. Responses: %s", mc.jobIdString(), snapshotId, idToString(executionId), responses);
                // a new execution started, ignore this response.
                return;
            }
            for (CompletableFuture<Void> response : missingResponses) {
                assert response.isDone() : "response not done";
                try {
                    response.get();
                } catch (ExecutionException e) {
                    mergedResult.merge(new SnapshotPhase1Result(0, 0, 0, e.getCause()));
                } catch (InterruptedException e) {
                    Thread.currentThread().interrupt();
                }
            }
            IMap<Object, Object> snapshotMap = mc.nodeEngine().getHazelcastInstance().getMap(snapshotMapName);
            try {
                SnapshotValidationRecord validationRecord = new SnapshotValidationRecord(snapshotId, mergedResult.getNumChunks(), mergedResult.getNumBytes(), mc.jobExecutionRecord().ongoingSnapshotStartTime(), mc.jobId(), mc.jobName(), mc.jobRecord().getDagJson());
                // The decision moment for exported snapshots: after this the snapshot is valid to be restored
                // from, however it will be not listed by JetInstance.getJobStateSnapshots unless the validation
                // record is inserted into the cache below
                Object oldValue = snapshotMap.put(SnapshotValidationRecord.KEY, validationRecord);
                if (snapshotMapName.startsWith(EXPORTED_SNAPSHOTS_PREFIX)) {
                    String snapshotName = snapshotMapName.substring(EXPORTED_SNAPSHOTS_PREFIX.length());
                    mc.jobRepository().cacheValidationRecord(snapshotName, validationRecord);
                }
                if (oldValue != null) {
                    logger.severe("SnapshotValidationRecord overwritten after writing to '" + snapshotMapName + "' for " + mc.jobIdString() + ": snapshot data might be corrupted");
                }
            } catch (Exception e) {
                mergedResult.merge(new SnapshotPhase1Result(0, 0, 0, e));
            }
            isSuccess = mergedResult.getError() == null;
            stats = mc.jobExecutionRecord().ongoingSnapshotDone(mergedResult.getNumBytes(), mergedResult.getNumKeys(), mergedResult.getNumChunks(), mergedResult.getError());
            // the decision moment for regular snapshots: after this the snapshot is ready to be restored from
            mc.writeJobExecutionRecord(false);
            if (logger.isFineEnabled()) {
                logger.fine(String.format("Snapshot %d phase 1 for %s completed with status %s in %dms, " + "%,d bytes, %,d keys in %,d chunks, stored in '%s', proceeding to phase 2", snapshotId, mc.jobIdString(), isSuccess ? "SUCCESS" : "FAILURE", stats.duration(), stats.numBytes(), stats.numKeys(), stats.numChunks(), snapshotMapName));
            }
            if (!isSuccess) {
                logger.warning(mc.jobIdString() + " snapshot " + snapshotId + " phase 1 failed on some " + "member(s), one of the failures: " + mergedResult.getError());
                try {
                    snapshotMap.clear();
                } catch (Exception e) {
                    logger.warning(mc.jobIdString() + ": failed to clear snapshot map '" + snapshotMapName + "' after a failure", e);
                }
            }
            if (!SnapshotFlags.isExport(snapshotFlags)) {
                mc.jobRepository().clearSnapshotData(mc.jobId(), mc.jobExecutionRecord().ongoingDataMapIndex());
            }
        } finally {
            mc.unlock();
        }
        // start the phase 2
        Function<ExecutionPlan, Operation> factory = plan -> new SnapshotPhase2Operation(mc.jobId(), executionId, snapshotId, isSuccess && !SnapshotFlags.isExportOnly(snapshotFlags));
        mc.invokeOnParticipants(factory, responses2 -> onSnapshotPhase2Complete(mergedResult.getError(), responses2, executionId, snapshotId, snapshotFlags, future, stats.startTime()), null, true);
    });
}