Shixiong Zhu created SPARK-12101:
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Summary: Fix thread pools that cannot cache tasks in Worker and
AppClient
Key: SPARK-12101
URL: https://issues.apache.org/jira/browse/SPARK-12101
Project: Spark
Issue Type: Bug
Components: Spark Core
Affects Versions: 1.5.2, 1.4.1, 1.6.0
Reporter: Shixiong Zhu
Assignee: Shixiong Zhu
SynchronousQueue cannot cache any task. This issue is similar to SPARK-11999.
It's an easy fix. Just use the fixed ThreadUtils.newDaemonCachedThreadPool.
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