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https://issues.apache.org/jira/browse/SOLR-9470?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Braun updated SOLR-9470:
--------------------------------
Attachment: solr-deadlock-2-r.txt
Replicated again - redacted thread dumps attached for relevant threads. Also
confirmed we see some of the same lines that were shown in the relevant
[SOLR-9278] deadlock ticket, where the index files can't be deleted, as shown
below:
{code}
09-22 17:24:42.317 - we started the process
09-22 17:25:43.716 org.apache.solr.handler.IndexFetcher
(recoveryExecutor-3-thread-1-processing-n:x.x.x.75:8983_solr
x:collection_shard1_replica1 s:shard1 c:collection) [s:shard1] IndexFetcher
unable to cleanup unused lucene index files so we must do a full copy instead
globalRequestId:
09-22 17:25:43.716 org.apache.solr.handler.IndexFetcher
(recoveryExecutor-3-thread-1-processing-n:x.x.x.75:8983_solr
x:collection_shard1_replica1 s:shard1 c:collection) [s:shard1] IndexFetcher
slept for 30000ms for unused lucene index files
to be delete-able globalRequestId:
INFO 09-22 17:25:43.864 org.apache.solr.update.DefaultSolrCoreState
(recoveryExecutor-3-thread-1-processing-n:x.x.x.75:8983_solr
x:collection_shard1_replica1 s:shard1 c:collection) [s:shard1] Rollback old
IndexWriter... core=collection_shard1_replica1
globalRequestId:
{code}
I'm hoping that the patch in SOLR-9278 is valid and would fix the problem?
> Deadlocked threads in recovery
> ------------------------------
>
> Key: SOLR-9470
> URL: https://issues.apache.org/jira/browse/SOLR-9470
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Affects Versions: 6.2
> Reporter: Michael Braun
> Attachments: solr-deadlock-2-r.txt, solr-deadlock.txt
>
>
> Background: Booted up a cluster and replicas were in recovery. All replicas
> recovered minus one, and it was hanging on HTTP requests. Issued shutdown and
> solr would not shut down. Examined with JStack and found a deadlock had
> occurred. The relevant thread information is attached. Some information has
> been redacted as well (some custom URPs, IPs) from the stack traces.
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