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https://issues.apache.org/jira/browse/SOLR-9847?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15740799#comment-15740799
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Mark Miller commented on SOLR-9847:
-----------------------------------
Not a complete deadlock I guess, but takes a long time to sort out:
{noformat}
[junit4] HEARTBEAT J9 PID(4929@totalmetal): 2016-12-11T21:27:14, stalled for
190s at: TestBulkSchemaConcurrent.test
[junit4] HEARTBEAT J9 PID(4929@totalmetal): 2016-12-11T21:28:14, stalled for
250s at: TestBulkSchemaConcurrent.test
[junit4] HEARTBEAT J9 PID(4929@totalmetal): 2016-12-11T21:29:14, stalled for
310s at: TestBulkSchemaConcurrent.test
[junit4] HEARTBEAT J9 PID(4929@totalmetal): 2016-12-11T21:30:14, stalled for
370s at: TestBulkSchemaConcurrent.test
[junit4] HEARTBEAT J9 PID(4929@totalmetal): 2016-12-11T21:31:14, stalled for
430s at: TestBulkSchemaConcurrent.test
[junit4] HEARTBEAT J9 PID(4929@totalmetal): 2016-12-11T21:32:14, stalled for
490s at: TestBulkSchemaConcurrent.test
[junit4] HEARTBEAT J9 PID(4929@totalmetal): 2016-12-11T21:33:14, stalled for
550s at: TestBulkSchemaConcurrent.test
[junit4] HEARTBEAT J9 PID(4929@totalmetal): 2016-12-11T21:34:14, stalled for
610s at: TestBulkSchemaConcurrent.test
[junit4] Suite: org.apache.solr.schema.TestBulkSchemaConcurrent
{noformat}
> Deadlock on ManagedIndexSchema lock.
> ------------------------------------
>
> Key: SOLR-9847
> URL: https://issues.apache.org/jira/browse/SOLR-9847
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Mark Miller
>
> Seems we hold the lock while in
> ManagedIndexSchema.waitForSchemaZkVersionAgreement, so we may never see
> agreement because are updates may also be waiting on that lock.
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