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https://issues.apache.org/jira/browse/YARN-8302?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16478532#comment-16478532
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Rohith Sharma K S commented on YARN-8302:
-----------------------------------------
If HBase is down for any reasons, hbase client will retry for 20 minutes with
default configurations loaded. Reducing the default value for
*hbase.client.retries.number* from 15 to 7, decreased drastically from 20
minutes to 1.5 minutes.
> ATS v2 should handle HBase connection issue properly
> ----------------------------------------------------
>
> Key: YARN-8302
> URL: https://issues.apache.org/jira/browse/YARN-8302
> Project: Hadoop YARN
> Issue Type: Bug
> Components: ATSv2
> Affects Versions: 3.1.0
> Reporter: Yesha Vora
> Priority: Major
>
> ATS v2 call times out with below error when it can't connect to HBase
> instance.
> {code}
> bash-4.2$ curl -i -k -s -1 -H 'Content-Type: application/json' -H 'Accept:
> application/json' --max-time 5 --negotiate -u :
> 'https://xxx:8199/ws/v2/timeline/apps/application_1526357251888_0022/entities/YARN_CONTAINER?fields=ALL&_=1526425686092'
> curl: (28) Operation timed out after 5002 milliseconds with 0 bytes received
> {code}
> {code:title=ATS log}
> 2018-05-15 23:10:03,623 INFO client.RpcRetryingCallerImpl
> (RpcRetryingCallerImpl.java:callWithRetries(134)) - Call exception, tries=7,
> retries=7, started=8165 ms ago, cancelled=false, msg=Call to xxx/xxx:17020
> failed on connection exception:
> org.apache.hbase.thirdparty.io.netty.channel.AbstractChannel$AnnotatedConnectException:
> Connection refused: xxx/xxx:17020, details=row
> 'prod.timelineservice.app_flow,
> ,99999999999999' on table 'hbase:meta' at region=hbase:meta,,1.1588230740,
> hostname=xxx,17020,1526348294182, seqNum=-1
> 2018-05-15 23:10:13,651 INFO client.RpcRetryingCallerImpl
> (RpcRetryingCallerImpl.java:callWithRetries(134)) - Call exception, tries=8,
> retries=8, started=18192 ms ago, cancelled=false, msg=Call to xxx/xxx:17020
> failed on connection exception:
> org.apache.hbase.thirdparty.io.netty.channel.AbstractChannel$AnnotatedConnectException:
> Connection refused: xxx/xxx:17020, details=row
> 'prod.timelineservice.app_flow,
> ,99999999999999' on table 'hbase:meta' at region=hbase:meta,,1.1588230740,
> hostname=xxx,17020,1526348294182, seqNum=-1
> 2018-05-15 23:10:23,730 INFO client.RpcRetryingCallerImpl
> (RpcRetryingCallerImpl.java:callWithRetries(134)) - Call exception, tries=9,
> retries=9, started=28272 ms ago, cancelled=false, msg=Call to xxx/xxx:17020
> failed on connection exception:
> org.apache.hbase.thirdparty.io.netty.channel.AbstractChannel$AnnotatedConnectException:
> Connection refused: xxx/xxx:17020, details=row
> 'prod.timelineservice.app_flow,
> ,99999999999999' on table 'hbase:meta' at region=hbase:meta,,1.1588230740,
> hostname=xxx,17020,1526348294182, seqNum=-1
> 2018-05-15 23:10:33,788 INFO client.RpcRetryingCallerImpl
> (RpcRetryingCallerImpl.java:callWithRetries(134)) - Call exception, tries=10,
> retries=10, started=38330 ms ago, cancelled=false, msg=Call to xxx/xxx:17020
> failed on connection exception:
> org.apache.hbase.thirdparty.io.netty.channel.AbstractChannel$AnnotatedConnectException:
> Connection refused: xxx/xxx:17020, details=row
> 'prod.timelineservice.app_flow,
> ,99999999999999' on table 'hbase:meta' at region=hbase:meta,,1.1588230740,
> hostname=xxx,17020,1526348294182, seqNum=-1{code}
> There are two issues here.
> 1) Check why ATS can't connect to HBase
> 2) In case of connection error, ATS call should not get timeout. It should
> fail with proper error.
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