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https://issues.apache.org/jira/browse/HIVE-10707?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14590787#comment-14590787
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Gunther Hagleitner commented on HIVE-10707:
-------------------------------------------
+1
> CBO: debug logging OOMs
> -----------------------
>
> Key: HIVE-10707
> URL: https://issues.apache.org/jira/browse/HIVE-10707
> Project: Hive
> Issue Type: Bug
> Components: CBO
> Affects Versions: 2.0.0
> Reporter: Gopal V
> Assignee: Gopal V
> Priority: Trivial
> Attachments: HIVE-10707.1.patch
>
>
> {code}
> hive> source xcross.sql;
> OK
> Time taken: 0.837 seconds
> Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
> at java.util.Arrays.copyOf(Arrays.java:3332)
> at
> java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:137)
> at
> java.lang.AbstractStringBuilder.ensureCapacityInternal(AbstractStringBuilder.java:121)
> at
> java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:421)
> at java.lang.StringBuilder.append(StringBuilder.java:136)
> at org.apache.hadoop.hive.ql.parse.ASTNode.dump(ASTNode.java:111)
> at org.apache.hadoop.hive.ql.parse.ASTNode.dump(ASTNode.java:119)
> at org.apache.hadoop.hive.ql.parse.ASTNode.dump(ASTNode.java:119)
> at org.apache.hadoop.hive.ql.parse.ASTNode.dump(ASTNode.java:119)
> at org.apache.hadoop.hive.ql.parse.ASTNode.dump(ASTNode.java:119)
> {code}
> The query contains 360 join clauses, wrapped in a UNION ALL.
> Looks like {{genOpTree}} does
> {code}
> this.ctx.setCboInfo("Plan optimized by CBO.");
> this.ctx.setCboSucceeded(true);
> LOG.debug(newAST.dump());
> }
> {code}
> the debug logging OOMs.
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