Thursday, March 27, 2014

Cassandra running out of memory heap space

I have configured Cassandra 2.0.4 in my laptop which was working fine for few weeks.  My machine configuration is below -





On a day-2-day basis, I have been truncating the database and recreating frequently.  After few weeks, when I tried to start Cassandra, I started getting the below error - 

 java.lang.OutOfMemoryError: Java heap space
at org.apache.cassandra.io.compress.CompressedRandomAccessReader.<init>(CompressedRandomAccessReader.java:64)
at org.apache.cassandra.io.compress.CompressedRandomAccessReader.open(CompressedRandomAccessReader.java:44)
at org.apache.cassandra.io.sstable.SSTableReader.openDataReader(SSTableReader.java:949)
at org.apache.cassandra.io.sstable.SSTableScanner.<init>(SSTableScanner.java:72)
at org.apache.cassandra.io.sstable.SSTableReader.getScanner(SSTableReader.java:796)
at org.apache.cassandra.db.RowIteratorFactory.getIterator(RowIteratorFactory.java:88)
at org.apache.cassandra.db.ColumnFamilyStore.getRangeSlice(ColumnFamilyStore.java:1329)
at org.apache.cassandra.service.StorageProxy.getRangeSlice(StorageProxy.java:806)
at org.apache.cassandra.thrift.CassandraServer.get_range_slices(CassandraServer.java:697)
at org.apache.cassandra.thrift.Cassandra$Processor$get_range_slices.process(Cassandra.java:3202)
at org.apache.cassandra.thrift.Cassandra$Processor.process(Cassandra.java:2889)
at org.apache.cassandra.thrift.CustomTThreadPoolServer$WorkerProcess.run(CustomTThreadPoolServer.java:187)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:636)

 I have made the below changes to Cassandra.bat and the problem got resolved.























I have updated the two highlighted values from -Xms1G^, -Xmx1G^ to -Xms2G^, -Xmx2G^ by allocating 2GB of heap memory for Cassandra. 

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3 comments:

  1. Naresh GunduMay 21, 2015 at 3:32 AM

    while starting the cassandra below is the error encountered as I am working ppc64 vm and using openjdk7


    ERROR 10:26:51 Exception in thread Thread[MemtableFlushWriter:1,5,main]
    java.lang.NoClassDefFoundError: Could not initialize class com.sun.jna.Native
    at org.apache.cassandra.utils.memory.MemoryUtil.allocate(MemoryUtil.java:82) ~[main/:na]
    at org.apache.cassandra.io.util.Memory.(Memory.java:74) ~[main/:na]
    at org.apache.cassandra.io.util.SafeMemory.(SafeMemory.java:32) ~[main/:na]
    at org.apache.cassandra.io.compress.CompressionMetadata$Writer.(CompressionMetadata.java:274) ~[main/:na]
    at org.apache.cassandra.io.compress.CompressionMetadata$Writer.open(CompressionMetadata.java:288) ~[main/:na]
    at org.apache.cassandra.io.compress.CompressedSequentialWriter.(CompressedSequentialWriter.java:75) ~[main/:na]
    at org.apache.cassandra.io.util.SequentialWriter.open(SequentialWriter.java:168) ~[main/:na]
    at org.apache.cassandra.io.sstable.format.big.BigTableWriter.(BigTableWriter.java:74) ~[main/:na]
    at org.apache.cassandra.io.sstable.format.big.BigFormat$WriterFactory.open(BigFormat.java:107) ~[main/:na]
    at org.apache.cassandra.io.sstable.format.SSTableWriter.create(SSTableWriter.java:84) ~[main/:na]
    at org.apache.cassandra.db.Memtable$FlushRunnable.createFlushWriter(Memtable.java:396) ~[main/:na]
    at org.apache.cassandra.db.Memtable$FlushRunnable.writeSortedContents(Memtable.java:343) ~[main/:na]
    at org.apache.cassandra.db.Memtable$FlushRunnable.runMayThrow(Memtable.java:328) ~[main/:na]
    at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28) ~[main/:na]
    at com.google.common.util.concurrent.MoreExecutors$SameThreadExecutorService.execute(MoreExecutors.java:297) ~[guava-16.0.jar:na]
    at org.apache.cassandra.db.ColumnFamilyStore$Flush.run(ColumnFamilyStore.java:1085) ~[main/:na]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) ~[na:1.7.0_79]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) ~[na:1.7.0_79]
    at java.lang.Thread.run(Thread.java:745) ~[na:1.7.0_79]

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    Replies
    1. chiragAugust 14, 2015 at 12:16 AM

      Facing a similar error,did you get the solution for this?

      Delete
  2. UnknownMay 30, 2018 at 12:08 AM

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