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https://issues.apache.org/jira/browse/CASSANDRA-7176?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13990753#comment-13990753
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Mohica Jasha commented on CASSANDRA-7176:
-----------------------------------------
Unfortunately we didn't have our logging fully enabled by the time this
happened. But from what I can see from logs the query just before the
java-driver timeout occurred in the app-server most likely was
{noformat}
DELETE from conditional_update_lock where resource_id = '${myresourceid}' IF
lock_id = ${myuuid};
{noformat}
We cannot reproduce the problem. So I suspect maybe it is a race condition bug
in Paxos implementation. Any idea?
> error in cassandra log file under stress
> ----------------------------------------
>
> Key: CASSANDRA-7176
> URL: https://issues.apache.org/jira/browse/CASSANDRA-7176
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Reporter: Mohica Jasha
>
> We are using C* 2.0.5 with DC1:3, DC2:3 and datastax java-driver 2.0.1 in our
> app-server.
> When we put our app-server under heavy stress testing. We got a
> {{com.datastax.driver.core.exceptions.ReadTimeoutException}} from java-driver
> and in the C* log file we got the following:
> {noformat}
> ERROR [Native-Transport-Requests:457009] 2014-05-02 13:49:09,794
> QueryMessage.java (line 131) Unexpected error during query
> java.lang.UnsupportedOperationException: Invalid consistency level:
> LOCAL_SERIAL
> at
> org.apache.cassandra.db.ConsistencyLevel.blockFor(ConsistencyLevel.java:137)
> at
> org.apache.cassandra.service.StorageProxy.beginAndRepairPaxos(StorageProxy.java:416)
> at
> org.apache.cassandra.service.StorageProxy.cas(StorageProxy.java:228)
> at
> org.apache.cassandra.cql3.statements.ModificationStatement.executeWithCondition(ModificationStatement.java:423)
> at
> org.apache.cassandra.cql3.statements.ModificationStatement.execute(ModificationStatement.java:380)
> at
> org.apache.cassandra.cql3.QueryProcessor.processStatement(QueryProcessor.java:188)
> at
> org.apache.cassandra.cql3.QueryProcessor.process(QueryProcessor.java:222)
> at
> org.apache.cassandra.transport.messages.QueryMessage.execute(QueryMessage.java:119)
> at
> org.apache.cassandra.transport.Message$Dispatcher.messageReceived(Message.java:304)
> at
> org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70)
> at
> org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)
> at
> org.jboss.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)
> at
> org.jboss.netty.handler.execution.ChannelUpstreamEventRunnable.doRun(ChannelUpstreamEventRunnable.java:43)
> at
> org.jboss.netty.handler.execution.ChannelEventRunnable.run(ChannelEventRunnable.java:67)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:744)
> ERROR [Native-Transport-Requests:457009] 2014-05-02 13:49:09,794
> ErrorMessage.java (line 222) Unexpected exception during request
> java.lang.UnsupportedOperationException: Invalid consistency level:
> LOCAL_SERIAL
> at
> org.apache.cassandra.db.ConsistencyLevel.blockFor(ConsistencyLevel.java:137)
> at
> org.apache.cassandra.service.StorageProxy.beginAndRepairPaxos(StorageProxy.java:416)
> at
> org.apache.cassandra.service.StorageProxy.cas(StorageProxy.java:228)
> at
> org.apache.cassandra.cql3.statements.ModificationStatement.executeWithCondition(ModificationStatement.java:423)
> at
> org.apache.cassandra.cql3.statements.ModificationStatement.execute(ModificationStatement.java:380)
> at
> org.apache.cassandra.cql3.QueryProcessor.processStatement(QueryProcessor.java:188)
> at
> org.apache.cassandra.cql3.QueryProcessor.process(QueryProcessor.java:222)
> at
> org.apache.cassandra.transport.messages.QueryMessage.execute(QueryMessage.java:119)
> at
> org.apache.cassandra.transport.Message$Dispatcher.messageReceived(Message.java:304)
> at
> org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70)
> at
> org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)
> at
> org.jboss.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)
> at
> org.jboss.netty.handler.execution.ChannelUpstreamEventRunnable.doRun(ChannelUpstreamEventRunnable.java:43)
> at
> org.jboss.netty.handler.execution.ChannelEventRunnable.run(ChannelEventRunnable.java:67)
> 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:744)
> {noformat}
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