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Flume >> mail # user >> AVRO_EVENT problem


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DeCarlo, Thom 2012-12-06, 14:59
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Re: AVRO_EVENT problem
Hi,

Hopefully someone will be able to answer the AVRO issue, in order to
help them, what version of Flume are you running?

Brock

On Thu, Dec 6, 2012 at 8:59 AM, DeCarlo, Thom <[EMAIL PROTECTED]> wrote:
> Hi,
> I'm just getting started with flume, so I apologize if this is an already known problem.
>
> I'm trying to set up a FILE_ROLL sink that uses the AVRO_EVENT serializer. But, when I start the agent I get an exception thrown from within the AVRO DataFileWriter class. It is failing when trying to cast a java.util.ArrayList to java.util.Map.
>
> Can anyone tell me how this is supposed to work?
>
> OBTW, I'm running on Windows 7 (64-bit), and I've tried both the 32- and 64-bit versions of both Java 1.6.0_37 and 1.7.0_09, with the same results.
>
> Thanks,
> Thom
> --
> The console output looks like this:
>
> 2012-12-04 14:24:25,111 (lifecycleSupervisor-1-4) [INFO - org.apache.flume.sink.RollingFileSink.start(RollingFileSink.java:135)] RollingFileSink fileSink-1 started.
> 2012-12-04 14:24:25,145 (lifecycleSupervisor-1-2) [INFO - org.apache.flume.source.NetcatSource.start(NetcatSource.java:164)] Created serverSocket:sun.nio.ch.ServerSocketChannelImpl[/127.0.0.1:33333]
> 2012-12-04 14:24:25,593 (SinkRunner-PollingRunner-DefaultSinkProcessor) [WARN - org.apache.flume.channel.jdbc.impl.JdbcTransactionImpl.rollback(JdbcTransactionImpl.java:102)] Marking transaction for rollback
> 2012-12-04 14:24:25,594 (SinkRunner-PollingRunner-DefaultSinkProcessor) [INFO - org.apache.flume.channel.jdbc.impl.JdbcTransactionImpl.close(JdbcTransactionImpl.java:118)] Attempting transaction roll-back
> 2012-12-04 14:24:25,604 (SinkRunner-PollingRunner-DefaultSinkProcessor) [ERROR - org.apache.flume.SinkRunner$PollingRunner.run(SinkRunner.java:160)] Unable to deliver event. Exception follows.
> org.apache.flume.EventDeliveryException: Failed to process transaction
>         at org.apache.flume.sink.RollingFileSink.process(RollingFileSink.java:218)
>         at org.apache.flume.sink.DefaultSinkProcessor.process(DefaultSinkProcessor.java:68)
>         at org.apache.flume.SinkRunner$PollingRunner.run(SinkRunner.java:147)
>         at java.lang.Thread.run(Thread.java:722)
> Caused by: org.apache.avro.file.DataFileWriter$AppendWriteException: java.lang.ClassCastException: java.util.ArrayList cannot be cast to java.util.Map
>         at org.apache.avro.file.DataFileWriter.append(DataFileWriter.java:263)
>         at org.apache.flume.serialization.AbstractAvroEventSerializer.write(AbstractAvroEventSerializer.java:108)
>         at org.apache.flume.sink.RollingFileSink.process(RollingFileSink.java:195)
>         ... 3 more
> Caused by: java.lang.ClassCastException: java.util.ArrayList cannot be cast to java.util.Map
>         at org.apache.avro.generic.GenericDatumWriter.getMapSize(GenericDatumWriter.java:174)
>         at org.apache.avro.generic.GenericDatumWriter.writeMap(GenericDatumWriter.java:159)
>         at org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:68)
>         at org.apache.avro.reflect.ReflectDatumWriter.write(ReflectDatumWriter.java:104)
>         at org.apache.avro.generic.GenericDatumWriter.writeRecord(GenericDatumWriter.java:105)
>         at org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:65)
>         at org.apache.avro.reflect.ReflectDatumWriter.write(ReflectDatumWriter.java:104)
>         at org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:57)
>         at org.apache.avro.file.DataFileWriter.append(DataFileWriter.java:257)
>         ... 5 more
>
> --
> My config file looks like this:
>
> ########################################
> # Sources
> ########################################
> agent1.sources = source1
>
> # Describe/configure source1
> agent1.sources.source1.type = netcat
> agent1.sources.source1.bind = localhost
> agent1.sources.source1.port = 33333
> agent1.sources.source1.interceptors = inter1 inter2
> agent1.sources.source1.interceptors.inter1.type = timestamp

Apache MRUnit - Unit testing MapReduce - http://incubator.apache.org/mrunit/
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DeCarlo, Thom 2012-12-06, 15:09
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Brock Noland 2012-12-06, 18:57
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DeCarlo, Thom 2012-12-06, 19:29
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Brock Noland 2012-12-06, 19:45
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Brock Noland 2012-12-06, 19:51
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DeCarlo, Thom 2012-12-06, 20:37
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Brock Noland 2012-12-06, 20:42
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DeCarlo, Thom 2012-12-06, 20:48
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DeCarlo, Thom 2012-12-07, 19:47
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Brock Noland 2012-12-07, 19:50
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB