Davies Liu created SPARK-12283:
----------------------------------
Summary: Use UnsafeRow as the buffer in SortBasedAggregation to
avoid Unsafe/Safe conversion
Key: SPARK-12283
URL: https://issues.apache.org/jira/browse/SPARK-12283
Project: Spark
Issue Type: Improvement
Components: SQL
Reporter: Davies Liu
SortBasedAggregation use GenericMutableRow as aggregation buffer, also requires
that the input can't be UnsafeRow, because the we can't compare/evaluate
UnsafeRow and GenericInternalRow in the same time. The TungstenSort output
UnsafeRow, so multiple Safe/Unsafe projections will be inserted between them.
If we can make sure that all the mutating happens in ascending order, the
buffer of UnsafeRow could be used to update var-length object (String, Binary,
Struct etc.)
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org
For additional commands, e-mail: issues-h...@spark.apache.org
