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Posted to dev@hive.apache.org by "Gopal V (JIRA)" <ji...@apache.org> on 2019/03/07 05:58:00 UTC
[jira] [Created] (HIVE-21400) Vectorization:
LazyBinarySerializeWrite allocates Field() within the loop
Gopal V created HIVE-21400:
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Summary: Vectorization: LazyBinarySerializeWrite allocates Field() within the loop
Key: HIVE-21400
URL: https://issues.apache.org/jira/browse/HIVE-21400
Project: Hive
Issue Type: Bug
Components: Vectorization
Affects Versions: 4.0.0
Reporter: Gopal V
GC thrash from an unexpected source in ReduceSinkOperator.
{code}
org.apache.hadoop.hive.serde2.lazybinary.fast.LazyBinarySerializeWrite.resetWithoutOutput(LazyBinarySerializeWrite.java:136)
at org.apache.hadoop.hive.serde2.lazybinary.fast.LazyBinarySerializeWrite.reset(LazyBinarySerializeWrite.java:132)
at org.apache.hadoop.hive.ql.exec.vector.reducesink.VectorReduceSinkUniformHashOperator.process(VectorReduceSinkUniformHashOperator.java:180)
{code}
GC space is getting thrashed by the
{code}
root = new Field(STRUCT);
{code}
for every row.
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