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From "Kevin Risden (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-14251) BlockPoolSlice ForkJoinPool introduced by HDFS-13768 breaks under Java SecurityManager
Date Fri, 01 Feb 2019 13:09:00 GMT
Kevin Risden created HDFS-14251:
-----------------------------------

             Summary: BlockPoolSlice  ForkJoinPool introduced by HDFS-13768 breaks under Java
SecurityManager
                 Key: HDFS-14251
                 URL: https://issues.apache.org/jira/browse/HDFS-14251
             Project: Hadoop HDFS
          Issue Type: Bug
    Affects Versions: 3.2.0, 2.10.0, 3.1.2
            Reporter: Kevin Risden


HDFS-13768 introduced ForkJoinPool to improve performance of BlockPoolSlice. The created
ForkJoinPool doesn't pass in a custom thread factory and by default the thread factory prevents
all privileges under the Java SecurityManager.

This broke when integrating Hadoop 3.2.0 with Apache Solr in SOLR-9515.

It isn't clear that the ForkJoinPool is necessary when a regular normal executor could work
instead?



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