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Posted to dev@hive.apache.org by "Gopal V (JIRA)" <ji...@apache.org> on 2015/05/14 08:18:59 UTC
[jira] [Created] (HIVE-10707) CBO: debug logging OOMs
Gopal V created HIVE-10707:
------------------------------
Summary: CBO: debug logging OOMs
Key: HIVE-10707
URL: https://issues.apache.org/jira/browse/HIVE-10707
Project: Hive
Issue Type: Bug
Components: CBO
Reporter: Gopal V
Priority: Trivial
{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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