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From "Radim Kolar (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-3306) Error in LeveledCompactionStrategy
Date Tue, 04 Oct 2011 14:40:34 GMT
Error in LeveledCompactionStrategy
----------------------------------

                 Key: CASSANDRA-3306
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-3306
             Project: Cassandra
          Issue Type: Bug
    Affects Versions: 1.0.0
            Reporter: Radim Kolar
            Priority: Critical


during stress testing, i always get this error making leveledcompaction strategy unusable.
Should be easy to reproduce - just write fast.

ERROR [CompactionExecutor:6] 2011-10-04 15:48:52,179 AbstractCassandraDaemon.java (line 133)
Fatal exception in thread Thread[CompactionExecutor:6,5,main]
java.lang.AssertionError
	at org.apache.cassandra.db.DataTracker$View.newSSTables(DataTracker.java:580)
	at org.apache.cassandra.db.DataTracker$View.replace(DataTracker.java:546)
	at org.apache.cassandra.db.DataTracker.replace(DataTracker.java:268)
	at org.apache.cassandra.db.DataTracker.replaceCompactedSSTables(DataTracker.java:232)
	at org.apache.cassandra.db.ColumnFamilyStore.replaceCompactedSSTables(ColumnFamilyStore.java:960)
	at org.apache.cassandra.db.compaction.CompactionTask.execute(CompactionTask.java:199)
	at org.apache.cassandra.db.compaction.LeveledCompactionTask.execute(LeveledCompactionTask.java:47)
	at org.apache.cassandra.db.compaction.CompactionManager$1.call(CompactionManager.java:131)
	at org.apache.cassandra.db.compaction.CompactionManager$1.call(CompactionManager.java:114)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:662)

and this is in json data for table:

{
  "generations" : [ {
    "generation" : 0,
    "members" : [ 459, 460, 461, 462, 463, 464, 465, 466, 467, 468, 469, 470, 471, 472, 473,
474, 475, 476, 477, 478, 479, 480, 481, 482, 483, 484 ]
  }, {
    "generation" : 1,
    "members" : [ ]
  }, {
    "generation" : 2,
    "members" : [ ]
  }, {
    "generation" : 3,
    "members" : [ ]
  }, {
    "generation" : 4,
    "members" : [ ]
  }, {
    "generation" : 5,
    "members" : [ ]
  }, {
    "generation" : 6,
    "members" : [ ]
  }, {
    "generation" : 7,
    "members" : [ ]
  } ]
}

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