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https://issues.apache.org/jira/browse/SOLR-9515?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16757807#comment-16757807
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Kevin Risden commented on SOLR-9515:
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Well setting that key to 0 results in the following.
{code:java}
<error message="Captured an uncaught exception in thread: Thread[id=226,
name=Thread-111, state=RUNNABLE, group=TGRP-HdfsRecoverLeaseTest]"
type="com.carrotsearch.randomizedtesting.UncaughtExceptionError">com.carrotsearch.randomizedtesting.UncaughtExceptionError:
Captured an uncaught exception in thread: Thread[id=226, name=Thread-111,
state=RUNNABLE, group=TGRP-HdfsRecoverLeaseTest]
Caused by: java.lang.IllegalArgumentException
at __randomizedtesting.SeedInfo.seed([B3EBC148FC827CD8]:0)
at
java.base/java.util.concurrent.ForkJoinPool.<init>(ForkJoinPool.java:2295)
at
java.base/java.util.concurrent.ForkJoinPool.<init>(ForkJoinPool.java:2165)
at
org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.BlockPoolSlice.initializeAddReplicaPool(BlockPoolSlice.java:213)
at
org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.BlockPoolSlice.<init>(BlockPoolSlice.java:188)
at
org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsVolumeImpl.addBlockPool(FsVolumeImpl.java:1041)
at
org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsVolumeImpl.addBlockPool(FsVolumeImpl.java:1033)
at
org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsVolumeList$2.run(FsVolumeList.java:412)
{code}
Definitely didn't work. From the ForkJoinPool javadocs:
@throws IllegalArgumentException if parallelism less than or equal to zero, or
greater than implementation limit
So yea not sure how to work around this.
> Update to Hadoop 3
> ------------------
>
> Key: SOLR-9515
> URL: https://issues.apache.org/jira/browse/SOLR-9515
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Mark Miller
> Assignee: Kevin Risden
> Priority: Blocker
> Fix For: 8.0, master (9.0)
>
> Attachments: SOLR-9515.patch, SOLR-9515.patch, SOLR-9515.patch,
> SOLR-9515.patch, SOLR-9515.patch, SOLR-9515.patch
>
> Time Spent: 4h 50m
> Remaining Estimate: 0h
>
> Hadoop 3 is not out yet, but I'd like to iron out the upgrade to be prepared.
> I'll start up a dev branch.
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