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  1. Solr
  2. SOLR-12807

out of memory error due to a lot of zk watchers in solr cloud

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 6.1
    • Fix Version/s: 6.5.1, 6.6, 7.0
    • Component/s: SolrCloud
    • Labels:
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      Description

      Analyzing the dump file,we found a lot of watchers in childWatches of ZKWatchManager,nearly 1.8G,the znode of childWatches is /overseer/collection-queue-work,confirm that it is not because of the frequent use of collection API and the network is normal. 

      The instance is the overseer leader of a solr cluster and did not restart for more than a year,suspect that the watchers grow with time.

      Our solr version is 6.1 and zookeeper version is 3.4.9.

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            • Assignee:
              Unassigned
              Reporter:
              Orange Mine Orange
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              • Created:
                Updated:
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