Sounds to me like https://issues.apache.org/jira/browse/CASSANDRA-3491, which was present in 1.0.2 and fixed in 1.0.3. It sounds like you're running the wrong version by mistake. On Mon, Nov 21, 2011 at 7:53 AM, Michael Vaknine wrote: > Hi, > Any help will be appreciated. > > I am upgrading Cassandra 1.0.0 to 1.0.3 got error > ERROR [CompactionExecutor:3] 2011-11-21 11:10:59,075 > AbstractCassandraDaemon.java (line 133) Fatal exception in thread > Thread[CompactionExecutor:     3,1,main] > 3645 java.lang.StackOverflowError > 3646     at com.google.common.base.Objects.equal(Objects.java:51) > 3647     at org.apache.cassandra.utils.Pair.equals(Pair.java:48) > 3648     at > java.util.concurrent.ConcurrentHashMap$Segment.get(ConcurrentHashMap.java:33 > 8) > 3649     at > java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:769) > 3650     at > com.googlecode.concurrentlinkedhashmap.ConcurrentLinkedHashMap.get(Concurren > tLinkedHashMap.java:740) > 3651     at > org.apache.cassandra.cache.ConcurrentLinkedHashCache.get(ConcurrentLinkedHas > hCache.java:81) > 3652     at > org.apache.cassandra.cache.InstrumentingCache.get(InstrumentingCache.java:68 > ) > 3653     at > org.apache.cassandra.io.sstable.SSTableReader.getCachedPosition(SSTableReade > r.java:598) > 3654     at > org.apache.cassandra.io.sstable.SSTableReader.getPosition(SSTableReader.java > :621) > 3655     at > org.apache.cassandra.io.sstable.SSTableReader.getFileDataInput(SSTableReader > .java:786) > 3656     at > org.apache.cassandra.db.columniterator.SSTableNamesIterator.(SSTableNa > mesIterator.java:61) > > I tried to increase Xss to 640M and then got this error > > ERROR [Thread-28] 2011-11-21 12:52:40,808 AbstractCassandraDaemon.java (line > 133) Fatal exception in thread Thread[Thread-28,5,main] > 4940 java.lang.RuntimeException: java.util.concurrent.ExecutionException: > java.lang.Error: Maximum lock count exceeded > 4941     at > org.apache.cassandra.db.index.SecondaryIndexManager.maybeBuildSecondaryIndex > es(SecondaryIndexManager.java:131) > 4942     at > org.apache.cassandra.streaming.StreamInSession.closeIfFinished(StreamInSessi > on.java:151) > 4943     at > org.apache.cassandra.streaming.IncomingStreamReader.read(IncomingStreamReade > r.java:102) > 4944     at > org.apache.cassandra.net.IncomingTcpConnection.stream(IncomingTcpConnection. > java:184) > 4945     at > org.apache.cassandra.net.IncomingTcpConnection.run(IncomingTcpConnection.jav > a:81) > 4946 Caused by: java.util.concurrent.ExecutionException: java.lang.Error: > Maximum lock count exceeded > 4947     at > java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:222) > 4948     at java.util.concurrent.FutureTask.get(FutureTask.java:83) > 4949     at > org.apache.cassandra.db.index.SecondaryIndexManager.maybeBuildSecondaryIndex > es(SecondaryIndexManager.java:122) > 4950     ... 4 more > 4951 Caused by: java.lang.Error: Maximum lock count exceeded > > None of this errors happen on 1.0.0 > > > Thanks > Michael > > -- Jonathan Ellis Project Chair, Apache Cassandra co-founder of DataStax, the source for professional Cassandra support http://www.datastax.com