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From "Tran, An - 0553 - MITLL" <at...@ll.mit.edu>
Subject TabletServerBatchReaderIterator Java heap space errors
Date Wed, 20 Nov 2013 00:38:07 GMT
Hi,

I am currently getting TabletServerBatchReaderIterator  Java heap space errors.  Below are
the log outputs.  Do any of you know what is going on and what is the proper solution to fix
this issue?
A little detail on the use case is I have an application which uses a thread pool that does
concurrent queries on Accumulo.  Any insight on this issue is greatly appreciated .

Thanks.

19 Nov 2013 14:13:06,845 52142 [batch scanner 7-7 looking up 4 ranges at 192.168.1.66:9997]
WARN  TabletServerBatchReaderIterator run
           Java heap space
java.lang.OutOfMemoryError: Java heap space
19 Nov 2013 14:13:06,845 52142 [batch scanner 7-6 looking up 5 ranges at 192.168.1.68:9997]
WARN  TabletServerBatchReaderIterator run
           Java heap space
java.lang.OutOfMemoryError: Java heap space
19 Nov 2013 14:13:06,844 52141 [batch scanner 7-3 looking up 3 ranges at 192.168.1.69:9997]
WARN  TabletServerBatchReaderIterator run
           Java heap space
java.lang.OutOfMemoryError: Java heap space
19 Nov 2013 14:13:06,844 52141 [batch scanner 7-2 looking up 3 ranges at 192.168.1.63:9997]
WARN  TabletServerBatchReaderIterator run
           Java heap space
java.lang.OutOfMemoryError: Java heap space
19 Nov 2013 14:13:06,843 52140 [batch scanner 6-1 looking up 5 ranges at 192.168.1.67:9997]
WARN  TabletServerBatchReaderIterator run
           Java heap space
java.lang.OutOfMemoryError: Java heap space
19 Nov 2013 14:13:06,846 52143 [batch scanner 7-4 looking up 7 ranges at 192.168.1.67:9997]
WARN  TabletServerBatchReaderIterator run
           Java heap space
java.lang.OutOfMemoryError: Java heap space
19 Nov 2013 14:13:06,846 52143 [batch scanner 6-3 looking up 5 ranges at 192.168.1.64:9997]
WARN  TabletServerBatchReaderIterator run
           Java heap space
ava.lang.OutOfMemoryError: Java heap space
at org.apache.accumulo.core.client.impl.TabletServerBatchReaderIterator.doLookup(TabletServerBatchReaderIterator.java:564)
at org.apache.accumulo.core.client.impl.TabletServerBatchReaderIterator$QueryTask.run(TabletServerBatchReaderIterator.java:338)
at org.apache.accumulo.cloudtrace.instrument.TraceRunnable.run(TraceRunnable.java:47)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)
java.lang.OutOfMemoryError: Java heap space
at java.util.Arrays.copyOfRange(Arrays.java:2550)
at org.apache.accumulo.core.util.ByteBufferUtil.toBytes(ByteBufferUtil.java:31)
at org.apache.accumulo.core.data.Key.<init>(Key.java:288)
at org.apache.accumulo.core.client.impl.TabletServerBatchReaderIterator.doLookup(TabletServerBatchReaderIterator.java:564)
at org.apache.accumulo.core.client.impl.TabletServerBatchReaderIterator$QueryTask.run(TabletServerBatchReaderIterator.java:338)
at org.apache.accumulo.cloudtrace.instrument.TraceRunnable.run(TraceRunnable.java:47)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)


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