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https://issues.apache.org/jira/browse/HIVE-27520?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17793732#comment-17793732
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Denys Kuzmenko commented on HIVE-27520:
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hi [~FuzzingTeam], if the issue is reproduced in the latest master, please
submit the PR
> Out of Memory when set hive.hashtable.initialCapacity to a large number
> -----------------------------------------------------------------------
>
> Key: HIVE-27520
> URL: https://issues.apache.org/jira/browse/HIVE-27520
> Project: Hive
> Issue Type: Bug
> Reporter: ConfX
> Priority: Critical
> Attachments: reproduce.sh
>
>
> h2. What happened:
> When setting {{hive.hashtable.initialCapacity}} to a large number, Hive
> throws an out-of-memory exception due to inappropriate checking and handling.
> *There is no checking or error-handling logic for this parameter at all.*
> h2. StackTrace:
> {noformat}
> java.lang.IllegalArgumentException: Illegal initial capacity: -923553553
>
>
> at java.base/java.util.HashMap.<init>(HashMap.java:445)
>
>
> at
> org.apache.hadoop.hive.ql.exec.persistence.HashMapWrapper.<init>(HashMapWrapper.java:89)
> at
> org.apache.hadoop.hive.ql.exec.persistence.HashMapWrapper.<init>(HashMapWrapper.java:81)
> at
> org.apache.hadoop.hive.ql.exec.vector.mapjoin.MapJoinTestConfig.createMapJoin(MapJoinTestConfig.java:837)
>
> at
> org.apache.hadoop.hive.ql.exec.vector.mapjoin.MapJoinTestConfig.createMapJoinImplementation(MapJoinTestConfig.java:988)
> at
> org.apache.hadoop.hive.ql.exec.vector.mapjoin.MapJoinTestConfig.createMapJoinImplementation(MapJoinTestConfig.java:971)
> {noformat}
> h2. Reproduce:
> (1) Set {{hive.hashtable.initialCapacity}} to a large value, e.g., 1223962862
> (2) Run a simple test that exercises this parameter, e.g.
> {{org.apache.hadoop.hive.ql.exec.vector.mapjoin.TestMapJoinOperator#testMultiKey3}}
>
> For an easy reproduction, run the reproduce.sh in the attachment.
> We are happy to provide a patch if this issue is confirmed.
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