Examples with Response voldemort.store.routed.Response used on opensource projects

Example 1 with Response

use of voldemort.store.routed.Response in project voldemort by voldemort.

the class PerformParallelDeleteRequests method executeInternal.

private void executeInternal(final Pipeline pipeline) {
    List<Node> nodes = pipelineData.getNodes();
    final Map<Integer, Response<ByteArray, Object>> responses = new ConcurrentHashMap<Integer, Response<ByteArray, Object>>();
    int attempts = nodes.size();
    int blocks = Math.min(preferred, attempts);
    final CountDownLatch attemptsLatch = new CountDownLatch(attempts);
    final CountDownLatch blocksLatch = new CountDownLatch(blocks);
    if (logger.isTraceEnabled())
        logger.trace("Attempting " + attempts + " " + pipeline.getOperation().getSimpleName() + " operations in parallel");
    long beginTime = System.nanoTime();
    for (int i = 0; i < attempts; i++) {
        final Node node = nodes.get(i);
        pipelineData.incrementNodeIndex();
        NonblockingStoreCallback callback = new NonblockingStoreCallback() {

            public void requestComplete(Object result, long requestTime) {
                if (logger.isTraceEnabled())
                    logger.trace(pipeline.getOperation().getSimpleName() + " response received (" + requestTime + " ms.) from node " + node.getId());
                Response<ByteArray, Object> response = new Response<ByteArray, Object>(node, key, result, requestTime);
                if (logger.isTraceEnabled()) {
                    logger.trace(attemptsLatch.getCount() + " attempts remaining. Will block " + " for " + blocksLatch.getCount() + " more ");
                }
                responses.put(node.getId(), response);
                if (response.getValue() instanceof Exception && isOperationCompleted.get()) {
                    handleException(response, pipeline);
                }
                attemptsLatch.countDown();
                blocksLatch.countDown();
            }
        };
        if (logger.isTraceEnabled())
            logger.info("Submitting " + pipeline.getOperation().getSimpleName() + " request on node " + node.getId());
        NonblockingStore store = nonblockingStores.get(node.getId());
        store.submitDeleteRequest(key, version, callback, timeoutMs);
    }
    try {
        long ellapsedNs = System.nanoTime() - beginTime;
        long remainingNs = (timeoutMs * Time.NS_PER_MS) - ellapsedNs;
        if (remainingNs > 0) {
            blocksLatch.await(remainingNs, TimeUnit.NANOSECONDS);
        }
    } catch (InterruptedException e) {
        if (logger.isEnabledFor(Level.WARN))
            logger.warn(e, e);
    }
    if (processResponses(responses, pipeline))
        return;
    // wait for more responses in case we did not have enough successful
    // response to achieve the required count
    boolean quorumSatisfied = true;
    if (pipelineData.getSuccesses() < required) {
        long ellapsedNs = System.nanoTime() - beginTime;
        long remainingNs = (timeoutMs * Time.NS_PER_MS) - ellapsedNs;
        if (remainingNs > 0) {
            try {
                attemptsLatch.await(remainingNs, TimeUnit.NANOSECONDS);
            } catch (InterruptedException e) {
                if (logger.isEnabledFor(Level.WARN))
                    logger.warn(e, e);
            }
            if (processResponses(responses, pipeline))
                return;
        }
        if (pipelineData.getSuccesses() < required) {
            pipelineData.setFatalError(new InsufficientOperationalNodesException(required + " " + pipeline.getOperation().getSimpleName() + "s required, but only " + pipelineData.getSuccesses() + " succeeded", pipelineData.getReplicationSet(), pipelineData.getNodes(), pipelineData.getFailedNodes(), pipelineData.getFailures()));
            abortPipeline(pipeline);
            quorumSatisfied = false;
        }
    }
    if (quorumSatisfied) {
        if (pipelineData.getZonesRequired() != null) {
            int zonesSatisfied = pipelineData.getZoneResponses().size();
            if (zonesSatisfied >= (pipelineData.getZonesRequired() + 1)) {
                completePipeline(pipeline);
            } else {
                long timeMs = (System.nanoTime() - beginTime) / Time.NS_PER_MS;
                if ((timeoutMs - timeMs) > 0) {
                    try {
                        attemptsLatch.await(timeoutMs - timeMs, TimeUnit.MILLISECONDS);
                    } catch (InterruptedException e) {
                        if (logger.isEnabledFor(Level.WARN))
                            logger.warn(e, e);
                    }
                    if (processResponses(responses, pipeline))
                        return;
                }
                if (pipelineData.getZoneResponses().size() >= (pipelineData.getZonesRequired() + 1)) {
                    completePipeline(pipeline);
                } else {
                    pipelineData.setFatalError(new InsufficientZoneResponsesException((pipelineData.getZonesRequired() + 1) + " " + pipeline.getOperation().getSimpleName() + "s required zone, but only " + zonesSatisfied + " succeeded"));
                    abortPipeline(pipeline);
                }
            }
        } else {
            completePipeline(pipeline);
        }
    }
}

Example 2 with Response

use of voldemort.store.routed.Response in project voldemort by voldemort.

the class PerformParallelGetAllRequests method execute.

@SuppressWarnings("unchecked")
public void execute(final Pipeline pipeline) {
    int attempts = pipelineData.getNodeToKeysMap().size();
    final Map<Integer, Response<Iterable<ByteArray>, Object>> responses = new ConcurrentHashMap<Integer, Response<Iterable<ByteArray>, Object>>();
    final CountDownLatch latch = new CountDownLatch(attempts);
    if (logger.isTraceEnabled())
        logger.trace("Attempting " + attempts + " " + pipeline.getOperation().getSimpleName() + " operations in parallel");
    Map<ByteArray, byte[]> transforms = pipelineData.getTransforms();
    final AtomicBoolean isResponseProcessed = new AtomicBoolean(false);
    for (Map.Entry<Node, List<ByteArray>> entry : pipelineData.getNodeToKeysMap().entrySet()) {
        final Node node = entry.getKey();
        final Collection<ByteArray> keys = entry.getValue();
        NonblockingStoreCallback callback = new NonblockingStoreCallback() {

            public void requestComplete(Object result, long requestTime) {
                if (logger.isTraceEnabled())
                    logger.trace(pipeline.getOperation().getSimpleName() + " response received (" + requestTime + " ms.) from node " + node.getId());
                Response<Iterable<ByteArray>, Object> response = new Response<Iterable<ByteArray>, Object>(node, keys, result, requestTime);
                responses.put(node.getId(), response);
                latch.countDown();
                // This reduces the window where an exception is lost
                if (isResponseProcessed.get() && response.getValue() instanceof Exception)
                    if (response.getValue() instanceof InvalidMetadataException) {
                        pipelineData.reportException((InvalidMetadataException) response.getValue());
                        logger.warn("Received invalid metadata problem after a successful " + pipeline.getOperation().getSimpleName() + " call on node " + node.getId() + ", store '" + pipelineData.getStoreName() + "'");
                    } else {
                        handleResponseError(response, pipeline, failureDetector);
                    }
            }
        };
        if (logger.isTraceEnabled())
            logger.trace("Submitting " + pipeline.getOperation().getSimpleName() + " request on node " + node.getId());
        NonblockingStore store = nonblockingStores.get(node.getId());
        store.submitGetAllRequest(keys, transforms, callback, timeoutMs);
    }
    try {
        latch.await(timeoutMs, TimeUnit.MILLISECONDS);
    } catch (InterruptedException e) {
        if (logger.isEnabledFor(Level.WARN))
            logger.warn(e, e);
    }
    for (Response<Iterable<ByteArray>, Object> response : responses.values()) {
        if (response.getValue() instanceof Exception) {
            if (handleResponseError(response, pipeline, failureDetector))
                return;
        } else {
            Map<ByteArray, List<Versioned<byte[]>>> values = (Map<ByteArray, List<Versioned<byte[]>>>) response.getValue();
            for (ByteArray key : response.getKey()) {
                MutableInt successCount = pipelineData.getSuccessCount(key);
                successCount.increment();
                List<Versioned<byte[]>> retrieved = values.get(key);
                /*
                     * retrieved can be null if there are no values for the key
                     * provided
                     */
                if (retrieved != null) {
                    List<Versioned<byte[]>> existing = pipelineData.getResult().get(key);
                    if (existing == null)
                        pipelineData.getResult().put(key, Lists.newArrayList(retrieved));
                    else
                        existing.addAll(retrieved);
                }
                HashSet<Integer> zoneResponses = null;
                if (pipelineData.getKeyToZoneResponse().containsKey(key)) {
                    zoneResponses = pipelineData.getKeyToZoneResponse().get(key);
                } else {
                    zoneResponses = new HashSet<Integer>();
                    pipelineData.getKeyToZoneResponse().put(key, zoneResponses);
                }
                zoneResponses.add(response.getNode().getZoneId());
            }
            pipelineData.getResponses().add(new Response<Iterable<ByteArray>, Map<ByteArray, List<Versioned<byte[]>>>>(response.getNode(), response.getKey(), values, response.getRequestTime()));
            failureDetector.recordSuccess(response.getNode(), response.getRequestTime());
        }
    }
    isResponseProcessed.set(true);
    pipeline.addEvent(completeEvent);
}

Example 3 with Response

use of voldemort.store.routed.Response in project voldemort by voldemort.

the class PerformParallelRequests method execute.

public void execute(final Pipeline pipeline) {
    List<Node> nodes = pipelineData.getNodes();
    int attempts = Math.min(preferred, nodes.size());
    final Map<Integer, Response<ByteArray, Object>> responses = new ConcurrentHashMap<Integer, Response<ByteArray, Object>>();
    final CountDownLatch latch = new CountDownLatch(attempts);
    if (logger.isTraceEnabled())
        logger.trace("Attempting " + attempts + " " + pipeline.getOperation().getSimpleName() + " operations in parallel for key " + key);
    final AtomicBoolean isResponseProcessed = new AtomicBoolean(false);
    for (int i = 0; i < attempts; i++) {
        final Node node = nodes.get(i);
        pipelineData.incrementNodeIndex();
        final long startMs = logger.isDebugEnabled() ? System.currentTimeMillis() : -1;
        NonblockingStoreCallback callback = new NonblockingStoreCallback() {

            public void requestComplete(Object result, long requestTime) {
                if (logger.isTraceEnabled())
                    logger.trace(pipeline.getOperation().getSimpleName() + " response received (" + requestTime + " ms.) from node " + node.getId() + "for key " + key);
                Response<ByteArray, Object> response = new Response<ByteArray, Object>(node, key, result, requestTime);
                if (logger.isDebugEnabled())
                    logger.debug("Finished " + pipeline.getOperation().getSimpleName() + " for key " + ByteUtils.toHexString(key.get()) + " (keyRef: " + System.identityHashCode(key) + "); started at " + startMs + " took " + requestTime + " ms on node " + node.getId() + "(" + node.getHost() + ")");
                responses.put(node.getId(), response);
                latch.countDown();
                // This reduces the window where an exception is lost
                if (isResponseProcessed.get() && response.getValue() instanceof Exception) {
                    if (response.getValue() instanceof InvalidMetadataException) {
                        pipelineData.reportException((InvalidMetadataException) response.getValue());
                        logger.warn("Received invalid metadata problem after a successful " + pipeline.getOperation().getSimpleName() + " call on node " + node.getId() + ", store '" + pipelineData.getStoreName() + "' for key " + key);
                    } else {
                        handleResponseError(response, pipeline, failureDetector);
                    }
                }
            }
        };
        if (logger.isTraceEnabled())
            logger.trace("Submitting " + pipeline.getOperation().getSimpleName() + " request on node " + node.getId() + " for key " + key);
        NonblockingStore store = nonblockingStores.get(node.getId());
        if (pipeline.getOperation() == Operation.GET)
            store.submitGetRequest(key, transforms, callback, timeoutMs);
        else if (pipeline.getOperation() == Operation.GET_VERSIONS)
            store.submitGetVersionsRequest(key, callback, timeoutMs);
        else
            throw new IllegalStateException(getClass().getName() + " does not support pipeline operation " + pipeline.getOperation());
    }
    try {
        latch.await(timeoutMs, TimeUnit.MILLISECONDS);
    } catch (InterruptedException e) {
        if (logger.isEnabledFor(Level.WARN))
            logger.warn(e, e);
    }
    for (Response<ByteArray, Object> response : responses.values()) {
        if (response.getValue() instanceof Exception) {
            if (handleResponseError(response, pipeline, failureDetector))
                return;
        } else {
            pipelineData.incrementSuccesses();
            Response<ByteArray, V> rCast = Utils.uncheckedCast(response);
            pipelineData.getResponses().add(rCast);
            failureDetector.recordSuccess(response.getNode(), response.getRequestTime());
            pipelineData.getZoneResponses().add(response.getNode().getZoneId());
        }
    }
    isResponseProcessed.set(true);
    if (logger.isDebugEnabled())
        logger.debug("GET for key " + ByteUtils.toHexString(key.get()) + " (keyRef: " + System.identityHashCode(key) + "); successes: " + pipelineData.getSuccesses() + " preferred: " + preferred + " required: " + required);
    if (pipelineData.getSuccesses() < required) {
        if (insufficientSuccessesEvent != null) {
            pipeline.addEvent(insufficientSuccessesEvent);
        } else {
            pipelineData.setFatalError(new InsufficientOperationalNodesException(required + " " + pipeline.getOperation().getSimpleName() + "s required, but only " + pipelineData.getSuccesses() + " succeeded", pipelineData.getReplicationSet(), pipelineData.getNodes(), pipelineData.getFailedNodes(), pipelineData.getFailures()));
            pipeline.abort();
        }
    } else {
        if (pipelineData.getZonesRequired() != null) {
            int zonesSatisfied = pipelineData.getZoneResponses().size();
            if (zonesSatisfied >= (pipelineData.getZonesRequired() + 1)) {
                pipeline.addEvent(completeEvent);
            } else {
                if (logger.isDebugEnabled()) {
                    logger.debug("Operation " + pipeline.getOperation().getSimpleName() + "failed due to insufficient zone responses, required " + pipelineData.getZonesRequired() + " obtained " + zonesSatisfied + " " + pipelineData.getZoneResponses() + " for key " + key);
                }
                if (this.insufficientZonesEvent != null) {
                    pipeline.addEvent(this.insufficientZonesEvent);
                } else {
                    pipelineData.setFatalError(new InsufficientZoneResponsesException((pipelineData.getZonesRequired() + 1) + " " + pipeline.getOperation().getSimpleName() + "s required zone, but only " + zonesSatisfied + " succeeded"));
                }
            }
        } else {
            pipeline.addEvent(completeEvent);
        }
    }
}

Example 4 with Response

use of voldemort.store.routed.Response in project voldemort by voldemort.

the class PerformZoneSerialRequests method execute.

public void execute(Pipeline pipeline) {
    List<Node> nodes = pipelineData.getNodes();
    while (pipelineData.getNodeIndex() < nodes.size() && (pipelineData.getZoneResponses().size() + 1) < pipelineData.getZonesRequired()) {
        Node node = nodes.get(pipelineData.getNodeIndex());
        long start = System.nanoTime();
        try {
            Store<ByteArray, byte[], byte[]> store = stores.get(node.getId());
            V result = storeRequest.request(store);
            Response<ByteArray, V> response = new Response<ByteArray, V>(node, key, result, ((System.nanoTime() - start) / Time.NS_PER_MS));
            pipelineData.incrementSuccesses();
            pipelineData.getResponses().add(response);
            failureDetector.recordSuccess(response.getNode(), response.getRequestTime());
            pipelineData.getZoneResponses().add(node.getZoneId());
        } catch (Exception e) {
            long requestTime = (System.nanoTime() - start) / Time.NS_PER_MS;
            if (handleResponseError(e, node, requestTime, pipeline, failureDetector))
                return;
        }
        pipelineData.incrementNodeIndex();
    }
    int zonesSatisfied = pipelineData.getZoneResponses().size();
    if (zonesSatisfied >= (pipelineData.getZonesRequired() + 1)) {
        pipeline.addEvent(completeEvent);
    } else {
        pipelineData.setFatalError(new InsufficientZoneResponsesException((pipelineData.getZonesRequired() + 1) + " " + pipeline.getOperation().getSimpleName() + "s required zone, but only " + zonesSatisfied + " succeeded"));
        pipeline.abort();
    }
}

Example 5 with Response

use of voldemort.store.routed.Response in project voldemort by voldemort.

the class PerformSerialRequests method execute.

public void execute(Pipeline pipeline) {
    List<Node> nodes = pipelineData.getNodes();
    // reads to make up for these.
    while (pipelineData.getSuccesses() < preferred && pipelineData.getNodeIndex() < nodes.size()) {
        Node node = nodes.get(pipelineData.getNodeIndex());
        long start = System.nanoTime();
        try {
            Store<ByteArray, byte[], byte[]> store = stores.get(node.getId());
            V result = storeRequest.request(store);
            Response<ByteArray, V> response = new Response<ByteArray, V>(node, key, result, ((System.nanoTime() - start) / Time.NS_PER_MS));
            if (logger.isDebugEnabled())
                logger.debug(pipeline.getOperation().getSimpleName() + " for key " + ByteUtils.toHexString(key.get()) + " successes: " + pipelineData.getSuccesses() + " preferred: " + preferred + " required: " + required + " new " + pipeline.getOperation().getSimpleName() + " success on node " + node.getId());
            pipelineData.incrementSuccesses();
            pipelineData.getResponses().add(response);
            failureDetector.recordSuccess(response.getNode(), response.getRequestTime());
            pipelineData.getZoneResponses().add(node.getZoneId());
        } catch (Exception e) {
            long requestTime = (System.nanoTime() - start) / Time.NS_PER_MS;
            if (handleResponseError(e, node, requestTime, pipeline, failureDetector))
                return;
        }
        // break out if we have satisfied everything
        if (isSatisfied())
            break;
        pipelineData.incrementNodeIndex();
    }
    if (pipelineData.getSuccesses() < required) {
        if (insufficientSuccessesEvent != null) {
            pipeline.addEvent(insufficientSuccessesEvent);
        } else {
            pipelineData.setFatalError(new InsufficientOperationalNodesException(required + " " + pipeline.getOperation().getSimpleName() + "s required, but only " + pipelineData.getSuccesses() + " succeeded", pipelineData.getReplicationSet(), pipelineData.getNodes(), pipelineData.getFailedNodes(), pipelineData.getFailures()));
            pipeline.abort();
        }
    } else {
        if (pipelineData.getZonesRequired() != null) {
            int zonesSatisfied = pipelineData.getZoneResponses().size();
            if (zonesSatisfied >= (pipelineData.getZonesRequired() + 1)) {
                pipeline.addEvent(completeEvent);
            } else {
                // if you run with zoneCountReads > 0, we could frequently
                // run into this exception since our preference list for
                // zone routing is laid out thus : <a node from each of
                // 'zoneCountReads' zones>, <nodes from local zone>, <nodes
                // from remote zone1>, <nodes from remote zone2>,...
                // #preferred number of reads may not be able to satisfy
                // zoneCountReads, if the original read to a remote node
                // fails in the parallel stage
                pipelineData.setFatalError(new InsufficientZoneResponsesException((pipelineData.getZonesRequired() + 1) + " " + pipeline.getOperation().getSimpleName() + "s required zone, but only " + zonesSatisfied + " succeeded"));
                pipeline.abort();
            }
        } else {
            pipeline.addEvent(completeEvent);
        }
    }
}