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https://issues.apache.org/jira/browse/SOLR-10974?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16068637#comment-16068637
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Erick Erickson commented on SOLR-10974:
---------------------------------------
Please raise this question on the user's list at [email protected],
see: (http://lucene.apache.org/solr/community.html#mailing-lists-irc) there are
a _lot_ more people watching that list who may be able to help.
If it's determined that this is a code issue in Solr and not a
configuration/usage problem, we can raise a JIRA.
As it stands, there is very little information to go on here. Exactly _how_ did
you "activate the replication of a shard via the web interface,"?
> Replication - Unable to download tlog
> -------------------------------------
>
> Key: SOLR-10974
> URL: https://issues.apache.org/jira/browse/SOLR-10974
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Components: replication (java)
> Affects Versions: 6.7
> Environment: Redhat 7.2
> Reporter: Rénald Koch
>
> When I activate the replication of a shard via the web interface, the data
> will replicate well on the new shard, but once all the data has been copied,
> the data will be erased and the synchronization will start again indefinitely.
> When I look in the logs, I have this error:
> 2017-06-29 10:51:39.768 ERROR
> (recoveryExecutor-3-thread-1-processing-n:X.X.X.X:8983_solr
> x:collection_shard2_replica2 s:shard2 c:collection r:core_node4)
> [c:collection s:shard2 r:core_node4 x:collection_shard2_replica2]
> o.a.s.h.ReplicationHandler Index fetch failed
> :org.apache.solr.common.SolrException: Unable to download
> tlog.0000000000002131263.1571535118797897728 completely. Downloaded 0!=871
> at
> org.apache.solr.handler.IndexFetcher$FileFetcher.cleanup(IndexFetcher.java:1591)
> at
> org.apache.solr.handler.IndexFetcher$FileFetcher.fetch(IndexFetcher.java:1474)
> at
> org.apache.solr.handler.IndexFetcher$FileFetcher.fetchFile(IndexFetcher.java:1449)
> at
> org.apache.solr.handler.IndexFetcher.downloadTlogFiles(IndexFetcher.java:893)
> at
> org.apache.solr.handler.IndexFetcher.fetchLatestIndex(IndexFetcher.java:494)
> at
> org.apache.solr.handler.IndexFetcher.fetchLatestIndex(IndexFetcher.java:301)
> at
> org.apache.solr.handler.ReplicationHandler.doFetch(ReplicationHandler.java:400)
> at
> org.apache.solr.cloud.RecoveryStrategy.replicate(RecoveryStrategy.java:219)
> at
> org.apache.solr.cloud.RecoveryStrategy.doRecovery(RecoveryStrategy.java:471)
> at
> org.apache.solr.cloud.RecoveryStrategy.run(RecoveryStrategy.java:284)
> at
> com.codahale.metrics.InstrumentedExecutorService$InstrumentedRunnable.run(InstrumentedExecutorService.java:176)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:229)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:748)
> I tried to extend the tlog retention time (especially with the
> commitReserveDuration option), but it does not work.
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