Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Retry bulk chunk requests to Elasticsearch 2, 5, and 6 #1626

Closed
wants to merge 7 commits into from
Closed

Retry bulk chunk requests to Elasticsearch 2, 5, and 6 #1626

Show file tree
Hide file tree
Changes from 3 commits
Commits
Show all changes
7 commits
Select commit Hold shift + click to select a range
7146ab9
Retry bulk chunk requests to Elasticsearch 2, 5, and 6
Jan 23, 2019
9605842
Catch all exceptions within the chunks.forEach block.
Jan 23, 2019
00c299f
Adds new params maxRetries and retryPause to saveAsElasticsearch method
Jan 23, 2019
b4d95d1
Revert "Adds new params maxRetries and retryPause to saveAsElasticsea…
Jan 23, 2019
2bd5492
Implements FluentBackoff
Feb 19, 2019
87e7805
Implements @Setup for ElasticsearchWriters, restores formatting
Feb 21, 2019
d8c1724
Restore indentation formatting on ES Bound constructors
Feb 21, 2019
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
144 changes: 120 additions & 24 deletions ...elasticsearch/es2/src/main/java/org/apache/beam/sdk/io/elasticsearch/ElasticsearchIO.java
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -122,63 +122,115 @@ public static<T> Bound withMaxBulkRequestSize(int maxBulkRequestSize) {
return new Bound<>().withMaxBulkRequestSize(maxBulkRequestSize);
}

/**
* Returns a transform for writing to Elasticsearch cluster.
*
* @param maxRetries Maximum number of retries to attempt for saving any single chunk of bulk
* requests to the Elasticsearch cluster.
*/
public static <T> Bound withMaxRetries(int maxRetries) {
return new Bound<>().withMaxRetries(maxRetries);
}

/**
* Returns a transform for writing to Elasticsearch cluster.
*
* @param retryPause Number of seconds to wait between successive retry attempts.
*/
public static <T> Bound withRetryPause(int retryPause) {
return new Bound<>().withRetryPause(retryPause);
}

public static class Bound<T> extends PTransform<PCollection<T>, PDone> {
private static final int CHUNK_SIZE = 3000;
private static final int DEFAULT_RETRIES = 3;
private static final int DEFAULT_RETRY_PAUSE = 5;

private final String clusterName;
private final InetSocketAddress[] servers;
private final Duration flushInterval;
private final SerializableFunction<T, Iterable<ActionRequest<?>>> toActionRequests;
private final long numOfShard;
private final int maxBulkRequestSize;
private final int maxRetries;
private final int retryPause;
private final ThrowingConsumer<BulkExecutionException> error;

private Bound(final String clusterName,
final InetSocketAddress[] servers,
final Duration flushInterval,
final SerializableFunction<T, Iterable<ActionRequest<?>>> toActionRequests,
final long numOfShard,
final int maxBulkRequestSize,
final ThrowingConsumer<BulkExecutionException> error) {
final InetSocketAddress[] servers,
Copy link
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

@soundofjw can you undo the unrelated changes, keep the format?

final Duration flushInterval,
final SerializableFunction<T, Iterable<ActionRequest<?>>> toActionRequests,
final long numOfShard,
final int maxBulkRequestSize,
int maxRetries, int retryPause, final ThrowingConsumer<BulkExecutionException> error) {
this.clusterName = clusterName;
this.servers = servers;
this.flushInterval = flushInterval;
this.toActionRequests = toActionRequests;
this.numOfShard = numOfShard;
this.maxBulkRequestSize = maxBulkRequestSize;
this.maxRetries = maxRetries;
this.retryPause = retryPause;
this.error = error;
}

Bound() {
this(null, null, null, null, 0, CHUNK_SIZE, defaultErrorHandler());
this(null, null, null, null, 0, CHUNK_SIZE, DEFAULT_RETRIES, DEFAULT_RETRY_PAUSE,
defaultErrorHandler());
}

public Bound<T> withClusterName(String clusterName) {
return new Bound<>(clusterName, servers, flushInterval, toActionRequests, numOfShard, maxBulkRequestSize, error);
return new Bound<>(clusterName, servers, flushInterval, toActionRequests, numOfShard,
maxBulkRequestSize,
maxRetries, retryPause, error);
}

public Bound<T> withServers(InetSocketAddress[] servers) {
return new Bound<>(clusterName, servers, flushInterval, toActionRequests, numOfShard, maxBulkRequestSize, error);
return new Bound<>(clusterName, servers, flushInterval, toActionRequests, numOfShard,
maxBulkRequestSize,
maxRetries, retryPause, error);
}

public Bound<T> withFlushInterval(Duration flushInterval) {
return new Bound<>(clusterName, servers, flushInterval, toActionRequests, numOfShard, maxBulkRequestSize, error);
return new Bound<>(clusterName, servers, flushInterval, toActionRequests, numOfShard,
maxBulkRequestSize,
maxRetries, retryPause, error);
}

public Bound<T> withFunction(SerializableFunction<T, Iterable<ActionRequest<?>>> toIndexRequest) {
return new Bound<>(clusterName, servers, flushInterval, toIndexRequest, numOfShard, maxBulkRequestSize, error);
return new Bound<>(clusterName, servers, flushInterval, toIndexRequest, numOfShard,
maxBulkRequestSize,
maxRetries, retryPause, error);
}

public Bound<T> withNumOfShard(long numOfShard) {
return new Bound<>(clusterName, servers, flushInterval, toActionRequests, numOfShard, maxBulkRequestSize, error);
return new Bound<>(clusterName, servers, flushInterval, toActionRequests, numOfShard,
maxBulkRequestSize,
maxRetries, retryPause, error);
}

public Bound<T> withError(ThrowingConsumer<BulkExecutionException> error) {
return new Bound<>(clusterName, servers, flushInterval, toActionRequests, numOfShard, maxBulkRequestSize, error);
return new Bound<>(clusterName, servers, flushInterval, toActionRequests, numOfShard,
maxBulkRequestSize,
maxRetries, retryPause, error);
}

public Bound<T> withMaxBulkRequestSize(int maxBulkRequestSize) {
return new Bound<>(clusterName, servers, flushInterval, toActionRequests, numOfShard, maxBulkRequestSize, error);
return new Bound<>(clusterName, servers, flushInterval, toActionRequests, numOfShard,
maxBulkRequestSize,
maxRetries, retryPause, error);
}

public Bound<T> withMaxRetries(int maxRetries) {
return new Bound<>(clusterName, servers, flushInterval, toActionRequests, numOfShard,
maxBulkRequestSize,
maxRetries, retryPause, error);
}

public Bound<T> withRetryPause(int retryPause) {
return new Bound<>(clusterName, servers, flushInterval, toActionRequests, numOfShard,
maxBulkRequestSize,
maxRetries, retryPause, error);
}

@Override
Expand All @@ -189,6 +241,8 @@ public PDone expand(final PCollection<T> input) {
checkNotNull(flushInterval);
checkArgument(numOfShard > 0);
checkArgument(maxBulkRequestSize > 0);
checkArgument(maxRetries >= 0);
checkArgument(retryPause >= 0);
input
.apply("Assign To Shard", ParDo.of(new AssignToShard<>(numOfShard)))
.apply("Re-Window to Global Window", Window.<KV<Long, T>>into(new GlobalWindows())
Expand All @@ -199,9 +253,10 @@ public PDone expand(final PCollection<T> input) {
.discardingFiredPanes()
.withTimestampCombiner(TimestampCombiner.END_OF_WINDOW))
.apply(GroupByKey.create())
.apply("Write to Elasticesarch",
.apply("Write to Elasticesearch",
ParDo.of(new ElasticsearchWriter<>
(clusterName, servers, maxBulkRequestSize, toActionRequests, error)));
(clusterName, servers, maxBulkRequestSize, toActionRequests, error,
maxRetries, retryPause)));
return PDone.in(input.getPipeline());
}
}
Expand All @@ -227,18 +282,24 @@ private static class ElasticsearchWriter<T> extends DoFn<KV<Long, Iterable<T>>,
private final SerializableFunction<T, Iterable<ActionRequest<?>>> toActionRequests;
private final ThrowingConsumer<BulkExecutionException> error;
private final int maxBulkRequestSize;
private final int maxRetries;
private final int retryPause;

public ElasticsearchWriter(String clusterName,
InetSocketAddress[] servers,
int maxBulkRequestSize,
SerializableFunction<T, Iterable<ActionRequest<?>>> toActionRequests,
ThrowingConsumer<BulkExecutionException> error) {
InetSocketAddress[] servers,
int maxBulkRequestSize,
SerializableFunction<T, Iterable<ActionRequest<?>>> toActionRequests,
ThrowingConsumer<BulkExecutionException> error, int maxRetries, int retryPause) {
this.maxBulkRequestSize = maxBulkRequestSize;
this.maxRetries = maxRetries;
this.retryPause = retryPause;
this.clientSupplier = new ClientSupplier(clusterName, servers);
this.toActionRequests = toActionRequests;
this.error = error;
}


@SuppressWarnings("Duplicates")
@ProcessElement
public void processElement(ProcessContext c) throws Exception {
final Iterable<T> values = c.element().getValue();
Expand All @@ -259,11 +320,46 @@ public void processElement(ProcessContext c) throws Exception {
Iterables.partition(actionRequests::iterator, maxBulkRequestSize);

chunks.forEach(chunk -> {
int attempts = 0;
Exception exception = null;

while (attempts <= maxRetries) {
try {
if (attempts > 0) {
// Sleep on subsequent attempts.
Thread.sleep(retryPause * 1000);
}

final BulkRequest bulkRequest = new BulkRequest().add(chunk).refresh(false);
Copy link
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

@soundofjw no need for .refresh(false) it's already the default.

Copy link
Author

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Yes, though it should be noted that when we are indexing with a refresh interval of -1, we're getting refreshes anyway (after a certain point, probably hitting the maximum amount of docs that can hang in the bulk queue) - it's really hard to know why this is happening. But to your point, changing this had no effect.

Copy link
Contributor

@regadas regadas Feb 22, 2019 •
edited
Loading

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Yeah refresh at indexing time can happen do to several things ... document sizes, nr documents, queues... I guess at some point we can offer support, but let's not do it in the same PR, next one! 😄

final BulkResponse bulkItemResponse = clientSupplier.get().bulk(bulkRequest).get();
if (bulkItemResponse.hasFailures()) {
exception = new BulkExecutionException(bulkItemResponse);
} else {
exception = null;
break;
}
} catch (Exception e) {
exception = e;
} finally {
if (exception != null) {
LOG.error(
"ElasticsearchWriter: Failed to bulk save chunk of " +
Objects.toString(chunk.size()) + " items, attempts remaining: " +
Objects.toString(maxRetries - attempts),
exception);
}
attempts += 1;
}
}

try {
final BulkRequest bulkRequest = new BulkRequest().add(chunk);
final BulkResponse bulkItemResponse = clientSupplier.get().bulk(bulkRequest).get();
if (bulkItemResponse.hasFailures()) {
error.accept(new BulkExecutionException(bulkItemResponse));
if (exception != null) {
if (exception instanceof BulkExecutionException) {
// This may result in no exception being thrown, depending on callback.
error.accept((BulkExecutionException) exception);
} else {
throw exception;
}
}
} catch (Exception e) {
throw new RuntimeException(e);
Expand Down
8 changes: 7 additions & 1 deletion scio-elasticsearch/es2/src/main/scala/com/spotify/scio/elasticsearch/ElasticsearchIO.scala
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -57,6 +57,8 @@ final case class ElasticsearchIO[T](esOptions: ElasticsearchOptions) extends Sci
.withFlushInterval(params.flushInterval)
.withNumOfShard(shards)
.withMaxBulkRequestSize(params.maxBulkRequestSize)
.withMaxRetries(params.maxRetries)
.withRetryPause(params.retryPause)
.withError(new beam.ThrowingConsumer[BulkExecutionException] {
override def accept(t: BulkExecutionException): Unit =
params.errorFn(t)
Expand All @@ -75,12 +77,16 @@ object ElasticsearchIO {
private[elasticsearch] val DefaultFlushInterval = Duration.standardSeconds(1)
private[elasticsearch] val DefaultNumShards = 0
private[elasticsearch] val DefaultMaxBulkRequestSize = 3000
private[elasticsearch] val DefaultMaxRetries = 3
private[elasticsearch] val DefaultRetryPause = 5
}

final case class WriteParam[T] private (
f: T => Iterable[ActionRequest[_]],
errorFn: BulkExecutionException => Unit = WriteParam.DefaultErrorFn,
flushInterval: Duration = WriteParam.DefaultFlushInterval,
numOfShards: Long = WriteParam.DefaultNumShards,
maxBulkRequestSize: Int = WriteParam.DefaultMaxBulkRequestSize)
maxBulkRequestSize: Int = WriteParam.DefaultMaxBulkRequestSize,
maxRetries: Int = WriteParam.DefaultMaxRetries,
retryPause: Int = WriteParam.DefaultRetryPause)
}
14 changes: 12 additions & 2 deletions scio-elasticsearch/es2/src/main/scala/com/spotify/scio/elasticsearch/package.scala
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -52,14 +52,24 @@ package object elasticsearch {
* @param numOfShards number of parallel writes to be performed, recommended setting is the
* number of pipeline workers
* @param errorFn function to handle error when performing Elasticsearch bulk writes
* @param maxRetries Maximum number of retries for each bulk save operation upon Exceptions
* @param retryPause Number of seconds to pause between subsequent attempts
*/
def saveAsElasticsearch(esOptions: ElasticsearchOptions,
flushInterval: Duration = WriteParam.DefaultFlushInterval,
numOfShards: Long = WriteParam.DefaultNumShards,
maxBulkRequestSize: Int = WriteParam.DefaultMaxBulkRequestSize,
errorFn: BulkExecutionException => Unit = WriteParam.DefaultErrorFn)(
errorFn: BulkExecutionException => Unit = WriteParam.DefaultErrorFn,
maxRetries: Int = WriteParam.DefaultMaxRetries,
retryPause: Int = WriteParam.DefaultRetryPause)(
f: T => Iterable[ActionRequest[_]])(implicit coder: Coder[T]): Future[Tap[Nothing]] = {
val param = WriteParam(f, errorFn, flushInterval, numOfShards, maxBulkRequestSize)
val param = WriteParam(f,
errorFn,
flushInterval,
numOfShards,
maxBulkRequestSize,
maxRetries,
retryPause)
self.write(ElasticsearchIO[T](esOptions))(param)
}
}
Expand Down
Loading