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From "Erick Erickson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-11278) Fix race in cdcr bootstrap process
Date Sat, 07 Oct 2017 14:33:02 GMT

    [ https://issues.apache.org/jira/browse/SOLR-11278?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16195727#comment-16195727
] 

Erick Erickson commented on SOLR-11278:
---------------------------------------

Amrit:

One strategy is to put debugging only code into master (not 7x) to test hypotheses. Be sure
to track it carefully and take it out as soon as you can of course.

> Fix race in cdcr bootstrap process
> ----------------------------------
>
>                 Key: SOLR-11278
>                 URL: https://issues.apache.org/jira/browse/SOLR-11278
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: CDCR
>    Affects Versions: 6.6.1, 7.0
>            Reporter: Amrit Sarkar
>            Assignee: Varun Thacker
>            Priority: Critical
>              Labels: test
>             Fix For: 7.1
>
>         Attachments: master-bs.patch, SOLR-11278-awaits-fix.patch, SOLR-11278-cancel-bootstrap-on-stop.patch,
SOLR-11278.patch, SOLR-11278.patch, SOLR-11278.patch, SOLR-11278.patch, test_results
>
>
> {{CdcrBootstrapTest}} is failing while running beasts for significant iterations.
> The bootstrapping is failing in the test, after the first batch is indexed for each {{testmethod}},
which results in documents mismatch ::
> {code}
>   [beaster]   2> 39167 ERROR (updateExecutor-39-thread-1-processing-n:127.0.0.1:42155_solr
x:cdcr-target_shard1_replica_n1 s:shard1 c:cdcr-target r:core_node2) [n:127.0.0.1:42155_solr
c:cdcr-target s:shard1 r:core_node2 x:cdcr-target_shard1_replica_n1] o.a.s.h.CdcrRequestHandler
Bootstrap operation failed
>   [beaster]   2> java.util.concurrent.ExecutionException: java.lang.AssertionError
>   [beaster]   2> 	at java.util.concurrent.FutureTask.report(FutureTask.java:122)
>   [beaster]   2> 	at java.util.concurrent.FutureTask.get(FutureTask.java:192)
>   [beaster]   2> 	at org.apache.solr.handler.CdcrRequestHandler.lambda$handleBootstrapAction$0(CdcrRequestHandler.java:654)
>   [beaster]   2> 	at com.codahale.metrics.InstrumentedExecutorService$InstrumentedRunnable.run(InstrumentedExecutorService.java:176)
>   [beaster]   2> 	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
>   [beaster]   2> 	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
>   [beaster]   2> 	at org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:188)
>   [beaster]   2> 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
>   [beaster]   2> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
>   [beaster]   2> 	at java.lang.Thread.run(Thread.java:748)
>   [beaster]   2> Caused by: java.lang.AssertionError
>   [beaster]   2> 	at org.apache.solr.handler.CdcrRequestHandler$BootstrapCallable.call(CdcrRequestHandler.java:813)
>   [beaster]   2> 	at org.apache.solr.handler.CdcrRequestHandler$BootstrapCallable.call(CdcrRequestHandler.java:724)
>   [beaster]   2> 	at com.codahale.metrics.InstrumentedExecutorService$InstrumentedCallable.call(InstrumentedExecutorService.java:197)
>   [beaster]   2> 	... 5 more
> {code}
> {code}
>   [beaster] [01:37:16.282] FAILURE  153s | CdcrBootstrapTest.testBootstrapWithSourceCluster
<<<
>   [beaster]    > Throwable #1: java.lang.AssertionError: Document mismatch on target
after sync expected:<2000> but was:<1000>
> {code}



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