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https://issues.apache.org/jira/browse/FLINK-5122?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15794694#comment-15794694
]
ASF GitHub Bot commented on FLINK-5122:
---------------------------------------
Github user static-max commented on a diff in the pull request:
https://github.com/apache/flink/pull/2861#discussion_r94382504
--- Diff:
flink-streaming-connectors/flink-connector-elasticsearch2/src/main/java/org/apache/flink/streaming/connectors/elasticsearch2/ElasticsearchSink.java
---
@@ -186,22 +198,47 @@ public void beforeBulk(long executionId, BulkRequest
request) {
@Override
public void afterBulk(long executionId, BulkRequest
request, BulkResponse response) {
+ boolean allRequestsRepeatable = true;
if (response.hasFailures()) {
for (BulkItemResponse itemResp :
response.getItems()) {
if (itemResp.isFailed()) {
- LOG.error("Failed to
index document in Elasticsearch: " + itemResp.getFailureMessage());
-
failureThrowable.compareAndSet(null, new
RuntimeException(itemResp.getFailureMessage()));
+ // Check if index
request can be retried
+ String
failureMessageLowercase = itemResp.getFailureMessage().toLowerCase();
+ if
(checkErrorAndRetryBulk && (
+
failureMessageLowercase.contains("timeout") ||
failureMessageLowercase.contains("timed out") // Generic timeout errors
+ ||
failureMessageLowercase.contains("UnavailableShardsException".toLowerCase()) //
Shard not available due to rebalancing or node down
+ ||
(failureMessageLowercase.contains("data/write/bulk") &&
failureMessageLowercase.contains("bulk")) // Bulk index queue on node full
+ )
+ ) {
+
LOG.debug("Retry bulk: {}", itemResp.getFailureMessage());
+
reAddBulkRequest(request);
--- End diff --
Your're right, it gets added multiple times, I'll fix that.
> Elasticsearch Sink loses documents when cluster has high load
> -------------------------------------------------------------
>
> Key: FLINK-5122
> URL: https://issues.apache.org/jira/browse/FLINK-5122
> Project: Flink
> Issue Type: Bug
> Components: Streaming Connectors
> Affects Versions: 1.2.0
> Reporter: static-max
> Assignee: static-max
>
> My cluster had high load and documents got not indexed. This violates the "at
> least once" semantics in the ES connector.
> I gave pressure on my cluster to test Flink, causing new indices to be
> created and balanced. On those errors the bulk should be tried again instead
> of being discarded.
> Primary shard not active because ES decided to rebalance the index:
> 2016-11-15 15:35:16,123 ERROR
> org.apache.flink.streaming.connectors.elasticsearch2.ElasticsearchSink -
> Failed to index document in Elasticsearch:
> UnavailableShardsException[[index-name][3] primary shard is not active
> Timeout: [1m], request: [BulkShardRequest to [index-name] containing [20]
> requests]]
> Bulk queue on node full (I set queue to a low value to reproduce error):
> 22:37:57,702 ERROR
> org.apache.flink.streaming.connectors.elasticsearch2.ElasticsearchSink -
> Failed to index document in Elasticsearch:
> RemoteTransportException[[node1][192.168.1.240:9300][indices:data/write/bulk[s][p]]];
> nested: EsRejectedExecutionException[rejected execution of
> org.elasticsearch.transport.TransportService$4@727e677c on
> EsThreadPoolExecutor[bulk, queue capacity = 1,
> org.elasticsearch.common.util.concurrent.EsThreadPoolExecutor@51322d37[Running,
> pool size = 2, active threads = 2, queued tasks = 1, completed tasks =
> 2939]]];
> I can try to propose a PR for this.
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