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From "Robert Stupp (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-11962) Non-fatal NPE during concurrent repair check
Date Mon, 06 Jun 2016 08:21:55 GMT
Robert Stupp created CASSANDRA-11962:
----------------------------------------

             Summary: Non-fatal NPE during concurrent repair check
                 Key: CASSANDRA-11962
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-11962
             Project: Cassandra
          Issue Type: Bug
            Reporter: Robert Stupp
            Priority: Minor


"Usual" checks for multiple repairs result in this exception in the log file:
{code}
ERROR [ValidationExecutor:6] 2016-06-06 07:56:23,530 CassandraDaemon.java:222 - Exception
in thread Thread[ValidationExecutor:6,1,main]
java.lang.RuntimeException: Cannot start multiple repair sessions over the same sstables
        at org.apache.cassandra.db.compaction.CompactionManager.getSSTablesToValidate(CompactionManager.java:1325)
~[main/:na]
        at org.apache.cassandra.db.compaction.CompactionManager.doValidationCompaction(CompactionManager.java:1215)
~[main/:na]
        at org.apache.cassandra.db.compaction.CompactionManager.access$700(CompactionManager.java:81)
~[main/:na]
        at org.apache.cassandra.db.compaction.CompactionManager$11.call(CompactionManager.java:844)
~[main/:na]
        at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[na:1.8.0_91]
{code}

However, I saw this one:

{code}
ERROR [ValidationExecutor:6] 2016-06-06 07:56:25,002 CassandraDaemon.java:222 - Exception
in thread Thread[ValidationExecutor:6,1,main]
java.lang.NullPointerException: null
        at org.apache.cassandra.service.ActiveRepairService$ParentRepairSession.getActiveSSTables(ActiveRepairService.java:495)
~[main/:na]
        at org.apache.cassandra.service.ActiveRepairService$ParentRepairSession.access$300(ActiveRepairService.java:451)
~[main/:na]
        at org.apache.cassandra.service.ActiveRepairService.currentlyRepairing(ActiveRepairService.java:338)
~[main/:na]
        at org.apache.cassandra.db.compaction.CompactionManager.getSSTablesToValidate(CompactionManager.java:1320)
~[main/:na]
        at org.apache.cassandra.db.compaction.CompactionManager.doValidationCompaction(CompactionManager.java:1215)
~[main/:na]
        at org.apache.cassandra.db.compaction.CompactionManager.access$700(CompactionManager.java:81)
~[main/:na]
        at org.apache.cassandra.db.compaction.CompactionManager$11.call(CompactionManager.java:844)
~[main/:na]
        at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[na:1.8.0_91]
{code}

Looks like there is no entry for {{cfId}} in {{getActiveSStables}} at {{for (SSTableReader
sstable : columnFamilyStores.get(cfId).getSSTables())}}.

(against trunk)



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