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From "Kevin Risden (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (HDFS-14251) BlockPoolSlice ForkJoinPool introduced by HDFS-13768 breaks under Java SecurityManager
Date Fri, 01 Feb 2019 13:52:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-14251?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16758315#comment-16758315
] 

Kevin Risden edited comment on HDFS-14251 at 2/1/19 1:51 PM:
-------------------------------------------------------------

FYI [~surendrasingh] and [~linyiqun] since you worked on -HDFS-13768- 


was (Author: risdenk):
FYI @surendrasingh and @linyiqun since you worked on -HDFS-13768- 

> 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: 2.10.0, 3.2.0, 3.1.2
>            Reporter: Kevin Risden
>            Priority: Major
>
> 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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