Examples with AtomicReference java.util.concurrent.atomic.AtomicReference used on opensource projects

Example 46 with AtomicReference

use of java.util.concurrent.atomic.AtomicReference in project crate by crate.

the class BulkShardProcessorTest method testNonEsRejectedExceptionDoesNotResultInRetryButAborts.

@Test
public void testNonEsRejectedExceptionDoesNotResultInRetryButAborts() throws Throwable {
    expectedException.expect(RuntimeException.class);
    expectedException.expectMessage("a random exception");
    final AtomicReference<ActionListener<ShardResponse>> ref = new AtomicReference<>();
    BulkRequestExecutor<ShardUpsertRequest> transportShardBulkAction = (request, listener) -> ref.set(listener);
    BulkRetryCoordinator bulkRetryCoordinator = new BulkRetryCoordinator(threadPool);
    BulkRetryCoordinatorPool coordinatorPool = mock(BulkRetryCoordinatorPool.class);
    when(coordinatorPool.coordinator(any(ShardId.class))).thenReturn(bulkRetryCoordinator);
    ShardUpsertRequest.Builder builder = new ShardUpsertRequest.Builder(TimeValue.timeValueMillis(10), false, false, null, new Reference[] { fooRef }, UUID.randomUUID());
    final BulkShardProcessor<ShardUpsertRequest> bulkShardProcessor = new BulkShardProcessor<>(clusterService, mock(TransportBulkCreateIndicesAction.class), new IndexNameExpressionResolver(Settings.EMPTY), Settings.EMPTY, coordinatorPool, false, 1, builder, transportShardBulkAction, UUID.randomUUID());
    bulkShardProcessor.add("foo", new ShardUpsertRequest.Item("1", null, new Object[] { "bar1" }, null), null);
    ActionListener<ShardResponse> listener = ref.get();
    listener.onFailure(new RuntimeException("a random exception"));
    assertFalse(bulkShardProcessor.add("foo", new ShardUpsertRequest.Item("2", null, new Object[] { "bar2" }, null), null));
    try {
        bulkShardProcessor.result().get();
    } catch (ExecutionException e) {
        throw e.getCause();
    } finally {
        bulkShardProcessor.close();
    }
}

Example 47 with AtomicReference

use of java.util.concurrent.atomic.AtomicReference in project crate by crate.

the class BulkShardProcessorTest method testThatAddAfterFailureBlocksDueToRetry.

@Test
public void testThatAddAfterFailureBlocksDueToRetry() throws Exception {
    ClusterService clusterService = mock(ClusterService.class);
    OperationRouting operationRouting = mock(OperationRouting.class);
    mockShard(operationRouting, 1);
    mockShard(operationRouting, 2);
    mockShard(operationRouting, 3);
    when(clusterService.operationRouting()).thenReturn(operationRouting);
    // listener will be executed 2 times, once for the successfully added row and once for the failure
    final CountDownLatch listenerLatch = new CountDownLatch(2);
    final AtomicReference<ActionListener<ShardResponse>> ref = new AtomicReference<>();
    BulkRequestExecutor<ShardUpsertRequest> transportShardBulkAction = (request, listener) -> {
        ref.set(listener);
        listenerLatch.countDown();
    };
    BulkRetryCoordinator bulkRetryCoordinator = new BulkRetryCoordinator(threadPool);
    BulkRetryCoordinatorPool coordinatorPool = mock(BulkRetryCoordinatorPool.class);
    when(coordinatorPool.coordinator(any(ShardId.class))).thenReturn(bulkRetryCoordinator);
    ShardUpsertRequest.Builder builder = new ShardUpsertRequest.Builder(TimeValue.timeValueMillis(10), false, false, null, new Reference[] { fooRef }, UUID.randomUUID());
    final BulkShardProcessor<ShardUpsertRequest> bulkShardProcessor = new BulkShardProcessor<>(clusterService, mock(TransportBulkCreateIndicesAction.class), new IndexNameExpressionResolver(Settings.EMPTY), Settings.EMPTY, coordinatorPool, false, 1, builder, transportShardBulkAction, UUID.randomUUID());
    bulkShardProcessor.add("foo", new ShardUpsertRequest.Item("1", null, new Object[] { "bar1" }, null), null);
    final ActionListener<ShardResponse> listener = ref.get();
    listener.onFailure(new EsRejectedExecutionException());
    // wait, failure retry lock is done in decoupled thread
    listenerLatch.await(10, TimeUnit.SECONDS);
    final ScheduledExecutorService scheduledExecutorService = Executors.newScheduledThreadPool(2);
    try {
        final AtomicBoolean hadBlocked = new AtomicBoolean(false);
        final AtomicBoolean hasBlocked = new AtomicBoolean(true);
        final CountDownLatch latch = new CountDownLatch(1);
        scheduledExecutorService.execute(new Runnable() {

            @Override
            public void run() {
                scheduledExecutorService.schedule(new Runnable() {

                    @Override
                    public void run() {
                        hadBlocked.set(hasBlocked.get());
                        latch.countDown();
                    }
                }, 10, TimeUnit.MILLISECONDS);
                bulkShardProcessor.add("foo", new ShardUpsertRequest.Item("2", null, new Object[] { "bar2" }, null), null);
                hasBlocked.set(false);
            }
        });
        latch.await();
        assertTrue(hadBlocked.get());
    } finally {
        scheduledExecutorService.shutdownNow();
    }
}

Example 48 with AtomicReference

use of java.util.concurrent.atomic.AtomicReference in project crate by crate.

the class BulkShardProcessorTest method testKill.

@Test
public void testKill() throws Exception {
    ClusterService clusterService = mock(ClusterService.class);
    OperationRouting operationRouting = mock(OperationRouting.class);
    mockShard(operationRouting, 1);
    mockShard(operationRouting, 2);
    mockShard(operationRouting, 3);
    when(clusterService.operationRouting()).thenReturn(operationRouting);
    final AtomicReference<ActionListener<ShardResponse>> ref = new AtomicReference<>();
    BulkRequestExecutor<ShardUpsertRequest> transportShardBulkAction = (request, listener) -> ref.set(listener);
    BulkRetryCoordinator bulkRetryCoordinator = new BulkRetryCoordinator(threadPool);
    BulkRetryCoordinatorPool coordinatorPool = mock(BulkRetryCoordinatorPool.class);
    when(coordinatorPool.coordinator(any(ShardId.class))).thenReturn(bulkRetryCoordinator);
    ShardUpsertRequest.Builder builder = new ShardUpsertRequest.Builder(TimeValue.timeValueMillis(10), false, false, null, new Reference[] { fooRef }, UUID.randomUUID());
    final BulkShardProcessor<ShardUpsertRequest> bulkShardProcessor = new BulkShardProcessor<>(clusterService, mock(TransportBulkCreateIndicesAction.class), new IndexNameExpressionResolver(Settings.EMPTY), Settings.EMPTY, coordinatorPool, false, 1, builder, transportShardBulkAction, UUID.randomUUID());
    assertThat(bulkShardProcessor.add("foo", new ShardUpsertRequest.Item("1", null, new Object[] { "bar1" }, null), null), is(true));
    bulkShardProcessor.kill(new InterruptedException());
    // A InterruptedException is thrown
    expectedException.expect(ExecutionException.class);
    expectedException.expectCause(isA(InterruptedException.class));
    bulkShardProcessor.result().get();
    // it's not possible to add more
    assertThat(bulkShardProcessor.add("foo", new ShardUpsertRequest.Item("1", null, new Object[] { "bar1" }, null), null), is(false));
}

Example 49 with AtomicReference

use of java.util.concurrent.atomic.AtomicReference in project crate by crate.

the class BlobRecoverySourceHandler method phase1.

/**
     * Perform phase1 of the recovery operations. Once this {@link SnapshotIndexCommit}
     * snapshot has been performed no commit operations (files being fsync'd)
     * are effectively allowed on this index until all recovery phases are done
     * <p/>
     * Phase1 examines the segment files on the target node and copies over the
     * segments that are missing. Only segments that have the same size and
     * checksum can be reused
     */
public void phase1(final SnapshotIndexCommit snapshot, final Translog.View translogView) {
    cancellableThreads.checkForCancel();
    // Total size of segment files that are recovered
    long totalSize = 0;
    // Total size of segment files that were able to be re-used
    long existingTotalSize = 0;
    final Store store = shard.store();
    store.incRef();
    try {
        // CRATE CHANGE
        if (blobRecoveryHandler != null) {
            blobRecoveryHandler.phase1();
        }
        StopWatch stopWatch = new StopWatch().start();
        final Store.MetadataSnapshot recoverySourceMetadata;
        try {
            recoverySourceMetadata = store.getMetadata(snapshot);
        } catch (CorruptIndexException | IndexFormatTooOldException | IndexFormatTooNewException ex) {
            shard.engine().failEngine("recovery", ex);
            throw ex;
        }
        for (String name : snapshot.getFiles()) {
            final StoreFileMetaData md = recoverySourceMetadata.get(name);
            if (md == null) {
                logger.info("Snapshot differs from actual index for file: {} meta: {}", name, recoverySourceMetadata.asMap());
                throw new CorruptIndexException("Snapshot differs from actual index - maybe index was removed metadata has " + recoverySourceMetadata.asMap().size() + " files", name);
            }
        }
        // Generate a "diff" of all the identical, different, and missing
        // segment files on the target node, using the existing files on
        // the source node
        String recoverySourceSyncId = recoverySourceMetadata.getSyncId();
        String recoveryTargetSyncId = request.metadataSnapshot().getSyncId();
        final boolean recoverWithSyncId = recoverySourceSyncId != null && recoverySourceSyncId.equals(recoveryTargetSyncId);
        if (recoverWithSyncId) {
            final long numDocsTarget = request.metadataSnapshot().getNumDocs();
            final long numDocsSource = recoverySourceMetadata.getNumDocs();
            if (numDocsTarget != numDocsSource) {
                throw new IllegalStateException("try to recover " + request.shardId() + " from primary shard with sync id but number of docs differ: " + numDocsTarget + " (" + request.sourceNode().getName() + ", primary) vs " + numDocsSource + "(" + request.targetNode().getName() + ")");
            }
            // we shortcut recovery here because we have nothing to copy. but we must still start the engine on the target.
            // so we don't return here
            logger.trace("[{}][{}] skipping [phase1] to {} - identical sync id [{}] found on both source and target", indexName, shardId, request.targetNode(), recoverySourceSyncId);
        } else {
            final Store.RecoveryDiff diff = recoverySourceMetadata.recoveryDiff(request.metadataSnapshot());
            for (StoreFileMetaData md : diff.identical) {
                response.phase1ExistingFileNames.add(md.name());
                response.phase1ExistingFileSizes.add(md.length());
                existingTotalSize += md.length();
                if (logger.isTraceEnabled()) {
                    logger.trace("[{}][{}] recovery [phase1] to {}: not recovering [{}], exists in local store and has checksum [{}], size [{}]", indexName, shardId, request.targetNode(), md.name(), md.checksum(), md.length());
                }
                totalSize += md.length();
            }
            for (StoreFileMetaData md : Iterables.concat(diff.different, diff.missing)) {
                if (request.metadataSnapshot().asMap().containsKey(md.name())) {
                    logger.trace("[{}][{}] recovery [phase1] to {}: recovering [{}], exists in local store, but is different: remote [{}], local [{}]", indexName, shardId, request.targetNode(), md.name(), request.metadataSnapshot().asMap().get(md.name()), md);
                } else {
                    logger.trace("[{}][{}] recovery [phase1] to {}: recovering [{}], does not exists in remote", indexName, shardId, request.targetNode(), md.name());
                }
                response.phase1FileNames.add(md.name());
                response.phase1FileSizes.add(md.length());
                totalSize += md.length();
            }
            response.phase1TotalSize = totalSize;
            response.phase1ExistingTotalSize = existingTotalSize;
            logger.trace("[{}][{}] recovery [phase1] to {}: recovering_files [{}] with total_size [{}], reusing_files [{}] with total_size [{}]", indexName, shardId, request.targetNode(), response.phase1FileNames.size(), new ByteSizeValue(totalSize), response.phase1ExistingFileNames.size(), new ByteSizeValue(existingTotalSize));
            cancellableThreads.execute(new Interruptable() {

                @Override
                public void run() throws InterruptedException {
                    RecoveryFilesInfoRequest recoveryInfoFilesRequest = new RecoveryFilesInfoRequest(request.recoveryId(), request.shardId(), response.phase1FileNames, response.phase1FileSizes, response.phase1ExistingFileNames, response.phase1ExistingFileSizes, translogView.totalOperations());
                    transportService.submitRequest(request.targetNode(), RecoveryTarget.Actions.FILES_INFO, recoveryInfoFilesRequest, TransportRequestOptions.builder().withTimeout(recoverySettings.internalActionTimeout()).build(), EmptyTransportResponseHandler.INSTANCE_SAME).txGet();
                }
            });
            // This latch will be used to wait until all files have been transferred to the target node
            final CountDownLatch latch = new CountDownLatch(response.phase1FileNames.size());
            final CopyOnWriteArrayList<Throwable> exceptions = new CopyOnWriteArrayList<>();
            final AtomicReference<Throwable> corruptedEngine = new AtomicReference<>();
            int fileIndex = 0;
            ThreadPoolExecutor pool;
            // How many bytes we've copied since we last called RateLimiter.pause
            final AtomicLong bytesSinceLastPause = new AtomicLong();
            for (final String name : response.phase1FileNames) {
                long fileSize = response.phase1FileSizes.get(fileIndex);
                // separately.
                if (fileSize > RecoverySettings.SMALL_FILE_CUTOFF_BYTES) {
                    pool = recoverySettings.concurrentStreamPool();
                } else {
                    pool = recoverySettings.concurrentSmallFileStreamPool();
                }
                pool.execute(new AbstractRunnable() {

                    @Override
                    public void onFailure(Throwable t) {
                        // we either got rejected or the store can't be incremented / we are canceled
                        logger.debug("Failed to transfer file [" + name + "] on recovery");
                    }

                    @Override
                    public void onAfter() {
                        // Signify this file has completed by decrementing the latch
                        latch.countDown();
                    }

                    @Override
                    protected void doRun() {
                        cancellableThreads.checkForCancel();
                        store.incRef();
                        final StoreFileMetaData md = recoverySourceMetadata.get(name);
                        try (final IndexInput indexInput = store.directory().openInput(name, IOContext.READONCE)) {
                            // at least one!
                            final int BUFFER_SIZE = (int) Math.max(1, recoverySettings.fileChunkSize().getBytes());
                            final byte[] buf = new byte[BUFFER_SIZE];
                            boolean shouldCompressRequest = recoverySettings.compress();
                            if (CompressorFactory.isCompressed(indexInput)) {
                                shouldCompressRequest = false;
                            }
                            final long len = indexInput.length();
                            long readCount = 0;
                            final TransportRequestOptions requestOptions = TransportRequestOptions.builder().withCompress(shouldCompressRequest).withType(TransportRequestOptions.Type.RECOVERY).withTimeout(recoverySettings.internalActionTimeout()).build();
                            while (readCount < len) {
                                if (shard.state() == IndexShardState.CLOSED) {
                                    // check if the shard got closed on us
                                    throw new IndexShardClosedException(shard.shardId());
                                }
                                int toRead = readCount + BUFFER_SIZE > len ? (int) (len - readCount) : BUFFER_SIZE;
                                final long position = indexInput.getFilePointer();
                                // Pause using the rate limiter, if desired, to throttle the recovery
                                RateLimiter rl = recoverySettings.rateLimiter();
                                long throttleTimeInNanos = 0;
                                if (rl != null) {
                                    long bytes = bytesSinceLastPause.addAndGet(toRead);
                                    if (bytes > rl.getMinPauseCheckBytes()) {
                                        // Time to pause
                                        bytesSinceLastPause.addAndGet(-bytes);
                                        throttleTimeInNanos = rl.pause(bytes);
                                        shard.recoveryStats().addThrottleTime(throttleTimeInNanos);
                                    }
                                }
                                indexInput.readBytes(buf, 0, toRead, false);
                                final BytesArray content = new BytesArray(buf, 0, toRead);
                                readCount += toRead;
                                final boolean lastChunk = readCount == len;
                                final RecoveryFileChunkRequest fileChunkRequest = new RecoveryFileChunkRequest(request.recoveryId(), request.shardId(), md, position, content, lastChunk, translogView.totalOperations(), throttleTimeInNanos);
                                cancellableThreads.execute(new Interruptable() {

                                    @Override
                                    public void run() throws InterruptedException {
                                        // Actually send the file chunk to the target node, waiting for it to complete
                                        transportService.submitRequest(request.targetNode(), RecoveryTarget.Actions.FILE_CHUNK, fileChunkRequest, requestOptions, EmptyTransportResponseHandler.INSTANCE_SAME).txGet();
                                    }
                                });
                            }
                        } catch (Throwable e) {
                            final Throwable corruptIndexException;
                            if ((corruptIndexException = ExceptionsHelper.unwrapCorruption(e)) != null) {
                                if (store.checkIntegrityNoException(md) == false) {
                                    // we are corrupted on the primary -- fail!
                                    logger.warn("{} Corrupted file detected {} checksum mismatch", shard.shardId(), md);
                                    if (corruptedEngine.compareAndSet(null, corruptIndexException) == false) {
                                        // if we are not the first exception, add ourselves as suppressed to the main one:
                                        corruptedEngine.get().addSuppressed(e);
                                    }
                                } else {
                                    // corruption has happened on the way to replica
                                    RemoteTransportException exception = new RemoteTransportException("File corruption occurred on recovery but checksums are ok", null);
                                    exception.addSuppressed(e);
                                    // last exception first
                                    exceptions.add(0, exception);
                                    logger.warn("{} Remote file corruption on node {}, recovering {}. local checksum OK", corruptIndexException, shard.shardId(), request.targetNode(), md);
                                }
                            } else {
                                // last exceptions first
                                exceptions.add(0, e);
                            }
                        } finally {
                            store.decRef();
                        }
                    }
                });
                fileIndex++;
            }
            cancellableThreads.execute(new Interruptable() {

                @Override
                public void run() throws InterruptedException {
                    // Wait for all files that need to be transferred to finish transferring
                    latch.await();
                }
            });
            if (corruptedEngine.get() != null) {
                shard.engine().failEngine("recovery", corruptedEngine.get());
                throw corruptedEngine.get();
            } else {
                ExceptionsHelper.rethrowAndSuppress(exceptions);
            }
            cancellableThreads.execute(new Interruptable() {

                @Override
                public void run() throws InterruptedException {
                    // are deleted
                    try {
                        transportService.submitRequest(request.targetNode(), RecoveryTarget.Actions.CLEAN_FILES, new RecoveryCleanFilesRequest(request.recoveryId(), shard.shardId(), recoverySourceMetadata, translogView.totalOperations()), TransportRequestOptions.builder().withTimeout(recoverySettings.internalActionTimeout()).build(), EmptyTransportResponseHandler.INSTANCE_SAME).txGet();
                    } catch (RemoteTransportException remoteException) {
                        final IOException corruptIndexException;
                        //   - maybe due to old segments without checksums or length only checks
                        if ((corruptIndexException = ExceptionsHelper.unwrapCorruption(remoteException)) != null) {
                            try {
                                final Store.MetadataSnapshot recoverySourceMetadata = store.getMetadata(snapshot);
                                StoreFileMetaData[] metadata = Iterables.toArray(recoverySourceMetadata, StoreFileMetaData.class);
                                ArrayUtil.timSort(metadata, new Comparator<StoreFileMetaData>() {

                                    @Override
                                    public int compare(StoreFileMetaData o1, StoreFileMetaData o2) {
                                        // check small files first
                                        return Long.compare(o1.length(), o2.length());
                                    }
                                });
                                for (StoreFileMetaData md : metadata) {
                                    logger.debug("{} checking integrity for file {} after remove corruption exception", shard.shardId(), md);
                                    if (store.checkIntegrityNoException(md) == false) {
                                        // we are corrupted on the primary -- fail!
                                        shard.engine().failEngine("recovery", corruptIndexException);
                                        logger.warn("{} Corrupted file detected {} checksum mismatch", shard.shardId(), md);
                                        throw corruptIndexException;
                                    }
                                }
                            } catch (IOException ex) {
                                remoteException.addSuppressed(ex);
                                throw remoteException;
                            }
                            // corruption has happened on the way to replica
                            RemoteTransportException exception = new RemoteTransportException("File corruption occurred on recovery but checksums are ok", null);
                            exception.addSuppressed(remoteException);
                            logger.warn("{} Remote file corruption during finalization on node {}, recovering {}. local checksum OK", corruptIndexException, shard.shardId(), request.targetNode());
                            throw exception;
                        } else {
                            throw remoteException;
                        }
                    }
                }
            });
        }
        prepareTargetForTranslog(translogView);
        logger.trace("[{}][{}] recovery [phase1] to {}: took [{}]", indexName, shardId, request.targetNode(), stopWatch.totalTime());
        response.phase1Time = stopWatch.totalTime().millis();
    } catch (Throwable e) {
        throw new RecoverFilesRecoveryException(request.shardId(), response.phase1FileNames.size(), new ByteSizeValue(totalSize), e);
    } finally {
        store.decRef();
    }
}

Example 50 with AtomicReference

use of java.util.concurrent.atomic.AtomicReference in project crate by crate.

the class BlobRecoveryHandler method phase1.

public void phase1() throws Exception {
    logger.debug("[{}][{}] recovery [phase1] to {}: start", request.shardId().index().name(), request.shardId().id(), request.targetNode().getName());
    StopWatch stopWatch = new StopWatch().start();
    blobTransferTarget.startRecovery();
    blobTransferTarget.createActiveTransfersSnapshot();
    sendStartRecoveryRequest();
    final AtomicReference<Exception> lastException = new AtomicReference<Exception>();
    try {
        syncVarFiles(lastException);
    } catch (InterruptedException ex) {
        throw new ElasticsearchException("blob recovery phase1 failed", ex);
    }
    Exception exception = lastException.get();
    if (exception != null) {
        throw exception;
    }
    /**
         * as soon as the recovery starts the target node will receive PutChunkReplicaRequests
         * the target node will then request the bytes it is missing from the source node
         * (it is missing bytes from PutChunk/StartBlob requests that happened before the recovery)
         * here we need to block so that the target node has enough time to request the head chunks
         *
         * e.g.
         *      Target Node receives Chunk X with bytes 10-19
         *      Target Node requests bytes 0-9 from Source Node
         *      Source Node sends bytes 0-9
         *      Source Node sets transferTakenOver
         */
    blobTransferTarget.waitForGetHeadRequests(GET_HEAD_TIMEOUT, TimeUnit.SECONDS);
    blobTransferTarget.createActivePutHeadChunkTransfersSnapshot();
    /**
         * After receiving a getHeadRequest the source node starts to send HeadChunks to the target
         * wait for all PutHeadChunk-Runnables to finish before ending the recovery.
         */
    blobTransferTarget.waitUntilPutHeadChunksAreFinished();
    sendFinalizeRecoveryRequest();
    blobTransferTarget.stopRecovery();
    stopWatch.stop();
    logger.debug("[{}][{}] recovery [phase1] to {}: took [{}]", request.shardId().index().name(), request.shardId().id(), request.targetNode().getName(), stopWatch.totalTime());
}