eaton created SPARK-25069:
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Summary: Using UnsafeAlignedOffset to make the entire record of 8
byte Items aligned like which is used in UnsafeExternalSorter
Key: SPARK-25069
URL: https://issues.apache.org/jira/browse/SPARK-25069
Project: Spark
Issue Type: Improvement
Components: Shuffle
Affects Versions: 2.3.1
Reporter: eaton
The class of UnsafeExternalSorter used UnsafeAlignedOffset to make the entire
record of 8 byte Items aligned, but ShuffleExternalSorter not.
The SPARC platform requires this because using a 4 byte Int for record lengths
causes the entire record of 8 byte Items to become misaligned by 4 bytes. Using
a 8 byte long for record length keeps things 8 byte aligned.
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