Re: Cassandra failure during read query at consistency QUORUM (2 responses were required but only 0 replica responded, 2 failed)

[Denis Mikhaylov]

Why does it prevent quorum? How to fix it?

> On 28 Oct 2016, at 16:02, Edward Capriolo  wrote:
> 
> This looks like another case of an assert bubbling through try catch that 
> don't catch assert
> 
> On Fri, Oct 28, 2016 at 6:30 AM, Denis Mikhaylov  wrote:
> Hi!
> 
> We’re running Cassandra 3.9
> 
> On the application side I see failed reads with this exception 
> com.datastax.driver.core.exceptions.ReadFailureException: Cassandra failure 
> during read query at consistency QUORUM (2 responses were required but only 0 
> replica responded, 2 failed)
> 
> On the server side we see:
> 
> WARN  [SharedPool-Worker-3] 2016-10-28 13:28:22,965 
> AbstractLocalAwareExecutorService.java:169 - Uncaught exception on thread 
> Thread[SharedPool-Worker-3,5,
> main]: {}
> java.lang.AssertionError: null
> at org.apache.cassandra.db.rows.BTreeRow.getCell(BTreeRow.java:212) 
> ~[apache-cassandra-3.7.jar:3.7]
> at 
> org.apache.cassandra.db.SinglePartitionReadCommand.canRemoveRow(SinglePartitionReadCommand.java:899)
>  ~[apache-cassandra-3.7.jar:3.7]
> at 
> org.apache.cassandra.db.SinglePartitionReadCommand.reduceFilter(SinglePartitionReadCommand.java:863)
>  ~[apache-cassandra-3.7.jar:3.7]
> at 
> org.apache.cassandra.db.SinglePartitionReadCommand.queryMemtableAndSSTablesInTimestampOrder(SinglePartitionReadCommand.java:748)
>  ~[apache-cassan
> dra-3.7.jar:3.7]
> at 
> org.apache.cassandra.db.SinglePartitionReadCommand.queryMemtableAndDiskInternal(SinglePartitionReadCommand.java:519)
>  ~[apache-cassandra-3.7.jar:
> 3.7]
> at 
> org.apache.cassandra.db.SinglePartitionReadCommand.queryMemtableAndDisk(SinglePartitionReadCommand.java:496)
>  ~[apache-cassandra-3.7.jar:3.7]
> at 
> org.apache.cassandra.db.SinglePartitionReadCommand.queryStorage(SinglePartitionReadCommand.java:358)
>  ~[apache-cassandra-3.7.jar:3.7]
> at 
> org.apache.cassandra.db.ReadCommand.executeLocally(ReadCommand.java:366) 
> ~[apache-cassandra-3.7.jar:3.7]
> at 
> org.apache.cassandra.db.ReadCommandVerbHandler.doVerb(ReadCommandVerbHandler.java:48)
>  ~[apache-cassandra-3.7.jar:3.7]
> at 
> org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:64) 
> ~[apache-cassandra-3.7.jar:3.7]
> at 
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 
> ~[na:1.8.0_102]
> at 
> org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$FutureTask.run(AbstractLocalAwareExecutorService.java:164)
>  ~[apache-cassandra-
> 3.7.jar:3.7]
> at 
> org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$LocalSessionFutureTask.run(AbstractLocalAwareExecutorService.java:136)
>  [apache
> -cassandra-3.7.jar:3.7]
> at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:105) 
> [apache-cassandra-3.7.jar:3.7]
> at java.lang.Thread.run(Thread.java:745) [na:1.8.0_102]
> 
> It’s only affect single table. Sadly both on test (3.9) and production (3.7) 
> deployments of cassandra.
> 
> What could be the problem? Please help.
> 

Re: Cassandra failure during read query at consistency QUORUM (2 responses were required but only 0 replica responded, 2 failed)

[Edward Capriolo]

This looks like another case of an assert bubbling through try catch that
don't catch assert

On Fri, Oct 28, 2016 at 6:30 AM, Denis Mikhaylov  wrote:

> Hi!
>
> We’re running Cassandra 3.9
>
> On the application side I see failed reads with this exception
> com.datastax.driver.core.exceptions.ReadFailureException: Cassandra
> failure during read query at consistency QUORUM (2 responses were required
> but only 0 replica responded, 2 failed)
>
> On the server side we see:
>
> WARN  [SharedPool-Worker-3] 2016-10-28 13:28:22,965
> AbstractLocalAwareExecutorService.java:169 - Uncaught exception on thread
> Thread[SharedPool-Worker-3,5,
> main]: {}
> java.lang.AssertionError: null
> at org.apache.cassandra.db.rows.BTreeRow.getCell(BTreeRow.java:212)
> ~[apache-cassandra-3.7.jar:3.7]
> at org.apache.cassandra.db.SinglePartitionReadCommand.
> canRemoveRow(SinglePartitionReadCommand.java:899)
> ~[apache-cassandra-3.7.jar:3.7]
> at org.apache.cassandra.db.SinglePartitionReadCommand.
> reduceFilter(SinglePartitionReadCommand.java:863)
> ~[apache-cassandra-3.7.jar:3.7]
> at org.apache.cassandra.db.SinglePartitionReadCommand.
> queryMemtableAndSSTablesInTimestampOrder(SinglePartitionReadCommand.java:748)
> ~[apache-cassan
> dra-3.7.jar:3.7]
> at org.apache.cassandra.db.SinglePartitionReadCommand.
> queryMemtableAndDiskInternal(SinglePartitionReadCommand.java:519)
> ~[apache-cassandra-3.7.jar:
> 3.7]
> at org.apache.cassandra.db.SinglePartitionReadCommand.
> queryMemtableAndDisk(SinglePartitionReadCommand.java:496)
> ~[apache-cassandra-3.7.jar:3.7]
> at org.apache.cassandra.db.SinglePartitionReadCommand.
> queryStorage(SinglePartitionReadCommand.java:358)
> ~[apache-cassandra-3.7.jar:3.7]
> at 
> org.apache.cassandra.db.ReadCommand.executeLocally(ReadCommand.java:366)
> ~[apache-cassandra-3.7.jar:3.7]
> at org.apache.cassandra.db.ReadCommandVerbHandler.doVerb(
> ReadCommandVerbHandler.java:48) ~[apache-cassandra-3.7.jar:3.7]
> at 
> org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:64)
> ~[apache-cassandra-3.7.jar:3.7]
> at 
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> ~[na:1.8.0_102]
> at org.apache.cassandra.concurrent.AbstractLocalAwareExecutorServ
> ice$FutureTask.run(AbstractLocalAwareExecutorService.java:164)
> ~[apache-cassandra-
> 3.7.jar:3.7]
> at org.apache.cassandra.concurrent.AbstractLocalAwareExecutorServ
> ice$LocalSessionFutureTask.run(AbstractLocalAwareExecutorService.java:136)
> [apache
> -cassandra-3.7.jar:3.7]
> at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:105)
> [apache-cassandra-3.7.jar:3.7]
> at java.lang.Thread.run(Thread.java:745) [na:1.8.0_102]
>
> It’s only affect single table. Sadly both on test (3.9) and production
> (3.7) deployments of cassandra.
>
> What could be the problem? Please help.