That&#39;s great!<div><br></div><div>Thanks Aaron.<br><br><div class="gmail_quote">On Sun, Aug 7, 2011 at 2:21 PM, aaron morton <span dir="ltr">&lt;<a href="mailto:aaron@thelastpickle.com">aaron@thelastpickle.com</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div style="word-wrap:break-word">The NPE is fixed in 0.8.2 see <a href="https://github.com/apache/cassandra/blob/cassandra-0.8.2/CHANGES.txt#L13" target="_blank">https://github.com/apache/cassandra/blob/cassandra-0.8.2/CHANGES.txt#L13</a><div>
<br></div><div>Cheers</div><div><br></div><div><div class="im"><div>
<span style="border-collapse:separate;color:rgb(0, 0, 0);font-family:Helvetica;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;font-size:medium"><span style="border-collapse:separate;color:rgb(0, 0, 0);font-family:Helvetica;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;font-size:medium"><div style="word-wrap:break-word">
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<div><div>-----------------</div><div>Aaron Morton</div><div>Freelance Cassandra Developer</div><div>@aaronmorton</div><div><a href="http://www.thelastpickle.com" target="_blank">http://www.thelastpickle.com</a></div></div>
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<br></div><div><div></div><div class="h5"><div><div>On 5 Aug 2011, at 12:46, Dikang Gu wrote:</div><br><blockquote type="cite">Sure, I can find the stack trace for some exceptions:<div><br><div><div><span style="background-color:rgb(255, 255, 102)">ERROR [pool-2-thread-132] 2011-07-23 13:29:04,869 Cassandra.java (line 3210) Internal error processing get_range_slices</span></div>

<div><span style="background-color:rgb(255, 255, 102)">java.lang.NullPointerException</span></div><div><span style="background-color:rgb(255, 255, 102)">        at org.apache.cassandra.db.ColumnFamily.diff(ColumnFamily.java:298)</span></div>

<div><span style="background-color:rgb(255, 255, 102)">        at org.apache.cassandra.db.ColumnFamily.diff(ColumnFamily.java:406)</span></div><div><span style="background-color:rgb(255, 255, 102)">        at org.apache.cassandra.service.RowRepairResolver.maybeScheduleRepairs(RowRepairResolver.java:103)</span></div>

<div><span style="background-color:rgb(255, 255, 102)">        at org.apache.cassandra.service.RangeSliceResponseResolver$2.getReduced(RangeSliceResponseResolver.java:120)</span></div><div><span style="background-color:rgb(255, 255, 102)">        at org.apache.cassandra.service.RangeSliceResponseResolver$2.getReduced(RangeSliceResponseResolver.java:85)</span></div>

<div><span style="background-color:rgb(255, 255, 102)">        at org.apache.cassandra.utils.ReducingIterator.computeNext(ReducingIterator.java:74)</span></div><div><span style="background-color:rgb(255, 255, 102)">        at com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:140)</span></div>

<div><span style="background-color:rgb(255, 255, 102)">        at com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:135)</span></div><div><span style="background-color:rgb(255, 255, 102)">        at org.apache.cassandra.service.StorageProxy.getRangeSlice(StorageProxy.java:715)</span></div>

<div><span style="background-color:rgb(255, 255, 102)">        at org.apache.cassandra.thrift.CassandraServer.get_range_slices(CassandraServer.java:617)</span></div><div><span style="background-color:rgb(255, 255, 102)">        at org.apache.cassandra.thrift.Cassandra$Processor$get_range_slices.process(Cassandra.java:3202)</span></div>

<div><span style="background-color:rgb(255, 255, 102)">        at org.apache.cassandra.thrift.Cassandra$Processor.process(Cassandra.java:2889)</span></div><div><span style="background-color:rgb(255, 255, 102)">        at org.apache.cassandra.thrift.CustomTThreadPoolServer$WorkerProcess.run(CustomTThreadPoolServer.java:187)</span></div>

<div><span style="background-color:rgb(255, 255, 102)">        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)</span></div><div><span style="background-color:rgb(255, 255, 102)">        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)</span></div>

<div><span style="background-color:rgb(255, 255, 102)">        at java.lang.Thread.run(Thread.java:636)</span></div><div><span style="background-color:rgb(255, 255, 102)"> 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)</span></div>

<div><br></div><div>But can no for some others:</div><div><div><br></div><div><span style="background-color:rgb(255, 255, 51)">ERROR [pool-2-thread-181] 2011-07-27 11:20:39,550 Cassandra.java (line 3210) Internal error processing get_range_slices</span></div>

<div><span style="background-color:rgb(255, 255, 51)">java.lang.NullPointerException</span></div><div><span style="background-color:rgb(255, 255, 51)"> 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)</span></div>

</div><div><br></div><div>Why does this happen?</div><div><br></div><div>Thanks.</div><br><div class="gmail_quote">On Fri, Aug 5, 2011 at 6:26 AM, aaron morton <span dir="ltr">&lt;<a href="mailto:aaron@thelastpickle.com" target="_blank">aaron@thelastpickle.com</a>&gt;</span> wrote:<br>

<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word">The error log will contain a call stack, we need that. <div><br></div><div>e.g. </div>

<div><br></div><div><div>Failed with exception java.io.IOException:java.lang.NullPointerException</div><div>ERROR 15:22:33,528 Failed with exception java.io.IOException:java.lang.NullPointerException</div><div>java.io.IOException: java.lang.NullPointerException</div>

<div><span style="white-space:pre-wrap">	</span>at org.apache.hadoop.hive.ql.exec.FetchOperator.getNextRow(FetchOperator.java:341)</div><div><span style="white-space:pre-wrap">	</span>at org.apache.hadoop.hive.ql.exec.FetchTask.fetch(FetchTask.java:133)</div>

<div><span style="white-space:pre-wrap">	</span>at org.apache.hadoop.hive.ql.Driver.getResults(Driver.java:1114)</div><div><span style="white-space:pre-wrap">	</span>at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:187)</div>

<div><span style="white-space:pre-wrap">	</span>at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:241)</div><div><span style="white-space:pre-wrap">	</span>at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:456)</div>

<div><span style="white-space:pre-wrap">	</span>at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)</div><div><span style="white-space:pre-wrap">	</span>at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)</div>

<div><span style="white-space:pre-wrap">	</span>at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)</div><div><span style="white-space:pre-wrap">	</span>at java.lang.reflect.Method.invoke(Method.java:597)</div>

<div><span style="white-space:pre-wrap">	</span>at org.apache.hadoop.util.RunJar.main(RunJar.java:156)</div><div>Caused by: java.lang.NullPointerException</div><div><span style="white-space:pre-wrap">	</span>at org.apache.cassandra.hadoop.ColumnFamilyRecordReader.getCurrentKey(ColumnFamilyRecordReader.java:82)</div>

<div><span style="white-space:pre-wrap">	</span>at org.apache.cassandra.hadoop.ColumnFamilyRecordReader.getCurrentKey(ColumnFamilyRecordReader.java:53)</div><div><span style="white-space:pre-wrap">	</span>at org.apache.hadoop.hive.cassandra.input.HiveCassandraStandardColumnInputFormat$2.next(HiveCassandraStandardColumnInputFormat.java:164)</div>

<div><span style="white-space:pre-wrap">	</span>at org.apache.hadoop.hive.cassandra.input.HiveCassandraStandardColumnInputFormat$2.next(HiveCassandraStandardColumnInputFormat.java:111)</div><div><span style="white-space:pre-wrap">	</span>at org.apache.hadoop.hive.ql.exec.FetchOperator.getNextRow(FetchOperator.java:326)</div>

<div><span style="white-space:pre-wrap">	</span>... 10 more</div><div><div><br></div><div>Cheers</div><div><br></div><div>
<span style="border-collapse:separate;color:rgb(0, 0, 0);font-family:Helvetica;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;font-size:medium"><span style="border-collapse:separate;color:rgb(0, 0, 0);font-family:Helvetica;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;font-size:medium"><div style="word-wrap:break-word">

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<div><div>-----------------</div><div>Aaron Morton</div><div>Freelance Cassandra Developer</div><div>@aaronmorton</div><div><a href="http://www.thelastpickle.com/" target="_blank">http://www.thelastpickle.com</a></div></div>

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<br></div><div><div></div><div><div><div>On 4 Aug 2011, at 15:26, Dikang Gu wrote:</div><br><blockquote type="cite"><div>
            <div>
                <span>Yes, I do find the error log! <div><br></div><div><div>ERROR [pool-2-thread-63] 2011-08-04 13:23:54,138 Cassandra.java (line 3210) Internal error processing get_range_slices</div><div>java.lang.NullPointerException</div>

</div><div><br></div><div>I&#39;m using the cassandra-0.8.1, is this a known bug?</div><div><br></div><div>Thanks.</div></span>
                <span><br>-- <br>Dikang Gu<br>0086 - 18611140205<br></span><p style="color:#a0a0a0">On Wednesday, August 3, 2011 at 7:53 PM, aaron morton wrote:</p>
                <blockquote type="cite" style="border-left-style:solid;border-width:1px;margin-left:0px;padding-left:10px">
                    <span><div><div>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. <br><br>

Double check the logging is configured correctly. <br><br>Cheers<br><br>-----------------<br>Aaron Morton<br>Freelance Cassandra Developer<br>@aaronmorton<br><a href="http://www.thelastpickle.com/" target="_blank">http://www.thelastpickle.com</a><br>

<br>On 3 Aug 2011, at 14:19, Dikang Gu wrote:<br><br><blockquote type="cite"><div>I got this error when processing a lot operations….<br><br>2011-08-03 11:26:35,786 ERROR [com.iw.nebula.dao.simpledb.SimpleDBAdapter] - &lt;Cassandra encountered an internal error processing this request: TApplicationError type: 6 message:Internal error processing batch_mutate&gt;<br>

<br>2011-08-03 11:48:21,998 ERROR [com.iw.nebula.dao.simpledb.SimpleDBAdapter] - &lt;Cassandra encountered an internal error processing this request: TApplicationError type: 6 message:Internal error processing get_range_slices&gt;<br>

<br>I did not see anything wrong in the cassandra/system.log<br><br>What&#39;s your suggestions?<br><br>-- <br>Dikang Gu<br>0086 - 18611140205<br></div></blockquote></div></div></span>
                
                
                
                
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        </div></blockquote></div><br></div></div></div></div></blockquote></div><br><br clear="all"><br>-- <br>Dikang Gu<div><br></div><div>0086 - 18611140205</div><br>
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</blockquote></div><br></div></div></div></div></blockquote></div><br><br clear="all"><br>-- <br>Dikang Gu<div><br></div><div>0086 - 18611140205</div><br>
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