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Date: Fri, 6 Nov 2009 17:45:32 +0000 (UTC)
From: "Chris Goffinet (JIRA)" <jira@apache.org>
To: cassandra-commits@incubator.apache.org
Subject: [jira] Created: (CASSANDRA-532) Flush creates empty SSTables if
 nothing exists in that CF
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Flush creates empty SSTables if nothing exists in that CF
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                 Key: CASSANDRA-532
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-532
             Project: Cassandra
          Issue Type: Bug
    Affects Versions: 0.5
            Reporter: Chris Goffinet
            Assignee: Jonathan Ellis
             Fix For: 0.5


When calling flush() through nodeprobe, we see SSTables being created that are empty for CFs:

 INFO [COMPACTION-POOL:1] 2009-11-05 22:58:09,515 ColumnFamilyStore.java (line 850) Compacting [org.apache.cassandra.io.SSTableReader(path='/mnt/cassandra/data/Digg/Buries-9-Data.db'),org.apache.cassandra.io.SSTableReader(path='/mnt/cassandra/data/Digg/Buries-10-Data.db'),org.apache.cassandra.io.SSTableReader(path='/mnt/cassandra/data/Digg/Buries-7-Data.db'),org.apache.cassandra.io.SSTableReader(path='/mnt/cassandra/data/Digg/Buries-11-Data.db'),org.apache.cassandra.io.SSTableReader(path='/mnt/cassandra/data/Digg/Buries-8-Data.db'),org.apache.cassandra.io.SSTableReader(path='/mnt/cassandra/data/Digg/Buries-5-Data.db'),org.apache.cassandra.io.SSTableReader(path='/mnt/cassandra/data/Digg/Buries-6-Data.db')]
ERROR [COMPACTION-POOL:1] 2009-11-05 22:58:09,516 DebuggableThreadPoolExecutor.java (line 120) Error in executor futuretask
java.util.concurrent.ExecutionException: java.lang.NullPointerException
        at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:222)
        at java.util.concurrent.FutureTask.get(FutureTask.java:83)
        at org.apache.cassandra.concurrent.DebuggableThreadPoolExecutor.afterExecute(DebuggableThreadPoolExecutor.java:112)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:888)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.NullPointerException
        at org.apache.cassandra.io.SSTableReader.getApproximateKeyCount(SSTableReader.java:102)
        at org.apache.cassandra.db.ColumnFamilyStore.doFileCompaction(ColumnFamilyStore.java:866)
        at org.apache.cassandra.db.ColumnFamilyStore.doFileCompaction(ColumnFamilyStore.java:830)
        at org.apache.cassandra.db.ColumnFamilyStore.doMajorCompactionInternal(ColumnFamilyStore.java:673)
        at org.apache.cassandra.db.ColumnFamilyStore.doMajorCompaction(ColumnFamilyStore.java:645)
        at org.apache.cassandra.db.CompactionManager$OnDemandCompactor.run(CompactionManager.java:123)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
        at java.util.concurrent.FutureTask.run(FutureTask.java:138)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        ... 2 more


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