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From aaron morton <aa...@thelastpickle.com>
Subject Re: Cassandra encountered an internal error processing this request: TApplicationError type: 6 message:Internal error
Date Sun, 07 Aug 2011 06:21:36 GMT
The NPE is fixed in 0.8.2 see https://github.com/apache/cassandra/blob/cassandra-0.8.2/CHANGES.txt#L13

Cheers

-----------------
Aaron Morton
Freelance Cassandra Developer
@aaronmorton
http://www.thelastpickle.com

On 5 Aug 2011, at 12:46, Dikang Gu wrote:

> Sure, I can find the stack trace for some exceptions:
> 
> ERROR [pool-2-thread-132] 2011-07-23 13:29:04,869 Cassandra.java (line 3210) Internal
error processing get_range_slices
> java.lang.NullPointerException
>         at org.apache.cassandra.db.ColumnFamily.diff(ColumnFamily.java:298)
>         at org.apache.cassandra.db.ColumnFamily.diff(ColumnFamily.java:406)
>         at org.apache.cassandra.service.RowRepairResolver.maybeScheduleRepairs(RowRepairResolver.java:103)
>         at org.apache.cassandra.service.RangeSliceResponseResolver$2.getReduced(RangeSliceResponseResolver.java:120)
>         at org.apache.cassandra.service.RangeSliceResponseResolver$2.getReduced(RangeSliceResponseResolver.java:85)
>         at org.apache.cassandra.utils.ReducingIterator.computeNext(ReducingIterator.java:74)
>         at com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:140)
>         at com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:135)
>         at org.apache.cassandra.service.StorageProxy.getRangeSlice(StorageProxy.java:715)
>         at org.apache.cassandra.thrift.CassandraServer.get_range_slices(CassandraServer.java:617)
>         at org.apache.cassandra.thrift.Cassandra$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)
>  INFO [NonPeriodicTasks:1] 2011-07-23 13:38:23,284 ColumnFamilyStore.java (line 1013)
Enqueuing flush of Memtable-MessageKey@2036597133(5020/62750 serialized/live bytes, 61 ops)
> 
> But can no for some others:
> 
> ERROR [pool-2-thread-181] 2011-07-27 11:20:39,550 Cassandra.java (line 3210) Internal
error processing get_range_slices
> java.lang.NullPointerException
>  INFO [NonPeriodicTasks:1] 2011-07-27 11:22:43,561 ColumnFamilyStore.java (line 1013)
Enqueuing flush of Memtable-MessageKey@1288355086(74715/933937 serialized/live bytes, 773
ops)
> 
> Why does this happen?
> 
> Thanks.
> 
> On Fri, Aug 5, 2011 at 6:26 AM, aaron morton <aaron@thelastpickle.com> wrote:
> The error log will contain a call stack, we need that. 
> 
> e.g. 
> 
> Failed with exception java.io.IOException:java.lang.NullPointerException
> ERROR 15:22:33,528 Failed with exception java.io.IOException:java.lang.NullPointerException
> java.io.IOException: java.lang.NullPointerException
> 	at org.apache.hadoop.hive.ql.exec.FetchOperator.getNextRow(FetchOperator.java:341)
> 	at org.apache.hadoop.hive.ql.exec.FetchTask.fetch(FetchTask.java:133)
> 	at org.apache.hadoop.hive.ql.Driver.getResults(Driver.java:1114)
> 	at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:187)
> 	at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:241)
> 	at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:456)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> 	at java.lang.reflect.Method.invoke(Method.java:597)
> 	at org.apache.hadoop.util.RunJar.main(RunJar.java:156)
> Caused by: java.lang.NullPointerException
> 	at org.apache.cassandra.hadoop.ColumnFamilyRecordReader.getCurrentKey(ColumnFamilyRecordReader.java:82)
> 	at org.apache.cassandra.hadoop.ColumnFamilyRecordReader.getCurrentKey(ColumnFamilyRecordReader.java:53)
> 	at org.apache.hadoop.hive.cassandra.input.HiveCassandraStandardColumnInputFormat$2.next(HiveCassandraStandardColumnInputFormat.java:164)
> 	at org.apache.hadoop.hive.cassandra.input.HiveCassandraStandardColumnInputFormat$2.next(HiveCassandraStandardColumnInputFormat.java:111)
> 	at org.apache.hadoop.hive.ql.exec.FetchOperator.getNextRow(FetchOperator.java:326)
> 	... 10 more
> 
> Cheers
> 
> -----------------
> Aaron Morton
> Freelance Cassandra Developer
> @aaronmorton
> http://www.thelastpickle.com
> 
> On 4 Aug 2011, at 15:26, Dikang Gu wrote:
> 
>> Yes, I do find the error log! 
>> 
>> ERROR [pool-2-thread-63] 2011-08-04 13:23:54,138 Cassandra.java (line 3210) Internal
error processing get_range_slices
>> java.lang.NullPointerException
>> 
>> I'm using the cassandra-0.8.1, is this a known bug?
>> 
>> Thanks.
>> 
>> -- 
>> Dikang Gu
>> 0086 - 18611140205
>> On Wednesday, August 3, 2011 at 7:53 PM, aaron morton wrote:
>> 
>>> There really should be something logged at the ERROR level in the server side
log, that error is raised when an unhanded exception bubbles out to the thrift layer on the
server. 
>>> 
>>> Double check the logging is configured correctly. 
>>> 
>>> Cheers
>>> 
>>> -----------------
>>> Aaron Morton
>>> Freelance Cassandra Developer
>>> @aaronmorton
>>> http://www.thelastpickle.com
>>> 
>>> On 3 Aug 2011, at 14:19, Dikang Gu wrote:
>>> 
>>>> I got this error when processing a lot operations….
>>>> 
>>>> 2011-08-03 11:26:35,786 ERROR [com.iw.nebula.dao.simpledb.SimpleDBAdapter]
- <Cassandra encountered an internal error processing this request: TApplicationError type:
6 message:Internal error processing batch_mutate>
>>>> 
>>>> 2011-08-03 11:48:21,998 ERROR [com.iw.nebula.dao.simpledb.SimpleDBAdapter]
- <Cassandra encountered an internal error processing this request: TApplicationError type:
6 message:Internal error processing get_range_slices>
>>>> 
>>>> I did not see anything wrong in the cassandra/system.log
>>>> 
>>>> What's your suggestions?
>>>> 
>>>> -- 
>>>> Dikang Gu
>>>> 0086 - 18611140205
>> 
> 
> 
> 
> 
> -- 
> Dikang Gu
> 
> 0086 - 18611140205
> 


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