[
https://issues.apache.org/jira/browse/BEAM-3026?focusedWorklogId=137289&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-137289
]
ASF GitHub Bot logged work on BEAM-3026:
----------------------------------------
Author: ASF GitHub Bot
Created on: 23/Aug/18 08:31
Start Date: 23/Aug/18 08:31
Worklog Time Spent: 10m
Work Description: echauchot commented on a change in pull request #6146:
[BEAM-3026] Adding retrying behavior on ElasticSearchIO
URL: https://github.com/apache/beam/pull/6146#discussion_r212223382
##########
File path:
sdks/java/io/elasticsearch-tests/elasticsearch-tests-common/src/test/java/org/apache/beam/sdk/io/elasticsearch/ElasticsearchIOTestCommon.java
##########
@@ -512,4 +536,44 @@ public Void apply(Iterable<String> input) {
return null;
}
}
+
+ /** Test that the default predicate correctly parses chosen error code. */
+ public void testDefaultRetryPredicate(RestClient restClient) throws
IOException {
+
+ HttpEntity entity1 = new NStringEntity(BAD_REQUEST,
ContentType.APPLICATION_JSON);
+ Response response1 =
+ restClient.performRequest("POST", "/_bulk", Collections.emptyMap(),
entity1);
+ assertTrue(CUSTOM_RETRY_PREDICATE.test(response1));
+
+ HttpEntity entity2 = new NStringEntity(OK_REQUEST,
ContentType.APPLICATION_JSON);
+ Response response2 =
+ restClient.performRequest("POST", "/_bulk", Collections.emptyMap(),
entity2);
+ assertFalse(DEFAULT_RETRY_PREDICATE.test(response2));
+ }
+
+ /**
+ * Test that retries are invoked when Elasticsearch returns a specific error
code. We invoke this
+ * by issuing corrupt data and retrying on the `400` error code. Normal
behaviour is to retry on
+ * `429` only but that is difficult to simulate reliably. The logger is used
to verify expected
+ * behavior.
+ */
+ public void testWriteRetry() throws Throwable {
+ expectedException.expect(IOException.class);
+ // max attempt is 3, but retry is 2 which excludes 1st attempt when error
was identified and retry started.
+ expectedException.expectMessage(
+ String.format(ElasticsearchIO.Write.WriteFn.RETRY_FAILED_LOG,
EXPECTED_RETRIES));
+
+ ElasticsearchIO.Write write =
+ ElasticsearchIO.write()
+ .withConnectionConfiguration(connectionConfiguration)
+ .withRetryConfiguration(
+ ElasticsearchIO.RetryConfiguration.create(MAX_ATTEMPTS,
Duration.millis(35000))
+ .withRetryPredicate(CUSTOM_RETRY_PREDICATE));
+ pipeline.apply(Create.of(Arrays.asList(BAD_FORMATTED_DOC))).apply(write);
+ try {
+ pipeline.run();
+ } catch (Exception ex) {
+ throw ex.getCause();
Review comment:
I guess you throw ex.getCause because Junit rule expectException expects a
IOException and this exception is the cause wrapped into the exception you get ?
If so it is not needed. Junit rule suports that. In general try/catch blocks
should not be needed when using expectException junit rule: you should use:
- expectedException.**expectCause**(**isA**(IOException.class))
- remove the try catch.
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Issue Time Tracking
-------------------
Worklog Id: (was: 137289)
Time Spent: 13h 10m (was: 13h)
> Improve retrying in ElasticSearch client
> ----------------------------------------
>
> Key: BEAM-3026
> URL: https://issues.apache.org/jira/browse/BEAM-3026
> Project: Beam
> Issue Type: Improvement
> Components: io-java-elasticsearch
> Reporter: Tim Robertson
> Assignee: Ravi Pathak
> Priority: Major
> Fix For: 2.7.0
>
> Time Spent: 13h 10m
> Remaining Estimate: 0h
>
> Currently an overloaded ES server will result in clients failing fast.
> I suggest implementing backoff pauses. Perhaps something like this:
> {code}
> ElasticsearchIO.ConnectionConfiguration conn =
> ElasticsearchIO.ConnectionConfiguration
> .create(new String[]{"http://...:9200"}, "test", "test")
> .retryWithWaitStrategy(WaitStrategies.exponentialBackoff(1000,
> TimeUnit.MILLISECONDS)
> .retryWithStopStrategy(StopStrategies.stopAfterAttempt(10)
> );
> {code}
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