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https://issues.apache.org/jira/browse/TAJO-991?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14122490#comment-14122490
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Mai Hai Thanh commented on TAJO-991:
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Hi [~hjkim],
After TAJO-991, if I install Tajo by the command "mvn clean install -Pdist
-Dtar", queries that require fetching data files will fail because Netty throws
IllegalArgumentException. However, if I additionally specify
"-Dhadoop.version=2.4.0", those queries will work. Do you know why ?
If specifying "-Dhadoop.version=2.4.0" is mandatory, we should update the
related documents.
> Running PullServer on a dedicated JVM process which separates from worker.
> --------------------------------------------------------------------------
>
> Key: TAJO-991
> URL: https://issues.apache.org/jira/browse/TAJO-991
> Project: Tajo
> Issue Type: Sub-task
> Components: data shuffle
> Reporter: Hyoungjun Kim
> Assignee: Hyoungjun Kim
>
> Currently PullServer runs on TajoWorker. If a TajoWorker starts Garbage
> Collector, all fetching tasks which run on other worker are paused during
> Garbage Collection. Running PullServer on a dedicated JVM process which
> separates from worker is helpful avoiding stop the all cluster by GC.
> PullServer uses small memory and doesn't share any information and status
> with TajoWorker.
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