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https://issues.apache.org/jira/browse/CASSANDRA-7200?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14044082#comment-14044082
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Brandon Williams commented on CASSANDRA-7200:
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I think I discovered this against 2.0, not sure what the status is there now.
bq. The IOException above is a known Hadoop issue that's marked as won't fix,
and it can be safely ignored. it just logs an exception to the debug log,
despite no exception actually being thrown. When the log level is set to any
value other that DEBUG, the exception disappears.
We could silence it with log4j/logback configuration.
bq. the hadoop_word_count fails to build. Are we still interested in shipping
it with Cassandra?
Yes
bq. Also, all of the examples shipped with Cassandra do not work on Windows.
Are we interested in supporting Windows examples?
It's probably a good idea, but not critical. What breaks on windows?
> word count broken
> -----------------
>
> Key: CASSANDRA-7200
> URL: https://issues.apache.org/jira/browse/CASSANDRA-7200
> Project: Cassandra
> Issue Type: Bug
> Components: Examples
> Reporter: Brandon Williams
> Assignee: Ala' Alkhaldi
> Fix For: 2.0.9
>
>
> word_count_setup hangs forever, and word_count loops forever with this
> exception:
> {noformat}
> DEBUG 17:52:42,875 java.io.IOException: config(config)
> at org.apache.hadoop.conf.Configuration.<init>(Configuration.java:260)
> at org.apache.hadoop.mapred.JobConf.<init>(JobConf.java:341)
> at org.apache.hadoop.mapreduce.JobContext.<init>(JobContext.java:76)
> at
> org.apache.hadoop.mapreduce.TaskAttemptContext.<init>(TaskAttemptContext.java:35)
> at
> org.apache.hadoop.mapreduce.TaskInputOutputContext.<init>(TaskInputOutputContext.java:44)
> at org.apache.hadoop.mapreduce.MapContext.<init>(MapContext.java:43)
> at org.apache.hadoop.mapreduce.Mapper$Context.<init>(Mapper.java:105)
> at sun.reflect.GeneratedConstructorAccessor14.newInstance(Unknown
> Source)
> at
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
> at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:759)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:370)
> at
> org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:212)
> {noformat}
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