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StorageGRID foreground verification causes Cassandra out of memory and CASA alarm

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Applies to

  • StorageGRID 11.5 and earlier
  • Foreground verification is running
  • StorageGRID contains huge objects

Issue

  • CASA Data Store Down alarm is detected on multiple nodes
  • bycast.log frequently shows the following error:

ERROR    0229 d8d1145c62625c26 FGVS: FGVerification_Module::execute Cassandra UnavailableException (Failed to execute cql: SELECT DISTINCT uuid, TOKEN(uuid) AS t FROM storagegrid.object_by_uuid WHERE TOKEN(uuid) > -XXXXXXXXXXXXXXXXXXX - Cassandra Driver Error(Unavailable):'Cannot achieve consistency level ALL')

  • servermanager.log shows cassandra service repeats to down immediately after startup in a short time

cassandra                 | cassandra ended
cassandra                 | starting cassandra
cassandra                 | cassandra ended
cassandra                 | starting cassandra
cassandra                 | cassandra ended
cassandra                 | starting cassandra
cassandra                 | cassandra ended

 

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