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
>
