Grokbase Groups Lucene dev June 2016
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Steve Rowe reopened SOLR-8875:

Reopening to backport to 5.6 and 5.5.2.
ZkStateWriter.writePendingUpdates() can return null clusterState; NPE in Overseer

Key: SOLR-8875
Project: Solr
Issue Type: Bug
Components: SolrCloud
Reporter: David Smiley
Assignee: David Smiley
Fix For: 6.0.1, 6.1

Attachments: SOLR-8875.patch

While trying to get the test in Varun's patch in SOLR-5750 (SolrCloud collection backup & restore) to succeed, I kept hitting an NPE in Overseer in which clusterState was null. I added a bunch of asserts and found where it was happening which I worked around temporarily. See which is ZkStateWriter.writePendingUpdates() returning null, overwriting the current non-null clusterState. This happens nearly every time for me when I run that test.

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postedJun 17, '16 at 8:10p
activeJun 17, '16 at 8:14p



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