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https://issues.apache.org/jira/browse/SPARK-4837?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14247030#comment-14247030
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Andrew Ash commented on SPARK-4837:
-----------------------------------
Ok that's fair -- a release note and targeting 1.2.1 sounds good.
Draft language for that release note could be:
- Spark 1.2.0 changes the default block transfer service to
NettyBlockTransferService, a higher performance block transfer service than the
old XYZBlockTransferService. The new transfer service does not yet respect
`spark.blockManager.port` so deployments needing full control of Spark's
network ports in 1.2.0 should temporarily set `spark.abc=xyz` and watch
SPARK-4837
> NettyBlockTransferService does not abide by spark.blockManager.port config
> option
> ---------------------------------------------------------------------------------
>
> Key: SPARK-4837
> URL: https://issues.apache.org/jira/browse/SPARK-4837
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 1.2.0
> Reporter: Aaron Davidson
> Assignee: Aaron Davidson
> Priority: Blocker
>
> The NettyBlockTransferService always binds to a random port, and does not use
> the spark.blockManager.port config as specified.
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