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From: Keith Turner <keith@deenlo.com>
Date: Wed, 19 Apr 2017 14:56:54 -0400
Message-ID: <CAGUtCHq+-_jHB8hzP02-1JoTQpbAnCdYs+6yFWQPdfiD6bu7Qw@mail.gmail.com>
Subject: Re: Batchscanner - error closing output stream because stream is closed
To: user@accumulo.apache.org
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archived-at: Wed, 19 Apr 2017 18:57:04 -0000

On Wed, Apr 19, 2017 at 12:38 PM, David Boyd <dboyd@incadencecorp.com> wrote:
> All:
>
>    I am getting this stack trace periodically based on no pattern I can
> determine from my application.

If you are seeing this regularly, try to enable Accumulo debug
logging.  That may allow you see messages like [1] which may help
understand the cause.

https://github.com/apache/accumulo/blob/rel/1.7.2/core/src/main/java/org/apache/accumulo/core/client/impl/TabletServerBatchReaderIterator.java#L689

>
> Is this a message I should be worried about?
>
> What is a technique to trace this back to my code and the cause?
>
> Obviously something is closing things before the thread closes it.
>
>
>> 2017-04-19 12:33:53,423 |  WARN | [batch scanner 19824- 8 looking up 1
>> ranges at accumulodev:9997] | (TIOStreamTransport.java:112) - Error closing
>> output stream.
>> java.io.IOException: The stream is closed
>>     at
>> org.apache.hadoop.net.SocketOutputStream.write(SocketOutputStream.java:118)
>>     at
>> java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82)
>>     at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140)
>>     at java.io.FilterOutputStream.close(FilterOutputStream.java:158)
>>     at
>> org.apache.thrift.transport.TIOStreamTransport.close(TIOStreamTransport.java:110)
>>     at
>> org.apache.thrift.transport.TFramedTransport.close(TFramedTransport.java:89)
>>     at
>> org.apache.accumulo.core.client.impl.ThriftTransportPool$CachedTTransport.close(ThriftTransportPool.java:309)
>>     at
>> org.apache.accumulo.core.client.impl.ThriftTransportPool.returnTransport(ThriftTransportPool.java:571)
>>     at
>> org.apache.accumulo.core.rpc.ThriftUtil.returnClient(ThriftUtil.java:151)
>>     at
>> org.apache.accumulo.core.client.impl.TabletServerBatchReaderIterator.doLookup(TabletServerBatchReaderIterator.java:686)
>>     at
>> org.apache.accumulo.core.client.impl.TabletServerBatchReaderIterator$QueryTask.run(TabletServerBatchReaderIterator.java:349)
>>     at org.apache.htrace.wrappers.TraceRunnable.run(TraceRunnable.java:57)
>>     at
>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
>>     at
>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
>>     at
>> org.apache.accumulo.fate.util.LoggingRunnable.run(LoggingRunnable.java:35)
>>     at java.lang.Thread.run(Thread.java:745)
>
>
>
> --
> ========= mailto:dboyd@incadencecorp.com ============
> David W. Boyd
> VP,  Data Solutions
> 10432 Balls Ford, Suite 240
> Manassas, VA 20109
> office:   +1-703-552-2862
> cell:     +1-703-402-7908
> ============== http://www.incadencecorp.com/ ============
> ISO/IEC JTC1 WG9, editor ISO/IEC 20547 Big Data Reference Architecture
> Chair ANSI/INCITS TC Big Data
> Co-chair NIST Big Data Public Working Group Reference Architecture
> First Robotic Mentor - FRC, FTC - www.iliterobotics.org
> Board Member- USSTEM Foundation - www.usstem.org
>
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