Wail Y. Alkowaileet created ASTERIXDB-3360:
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Summary: Honor ByteBuffer position and limit when writing
compressed B-Tree pages
Key: ASTERIXDB-3360
URL: https://issues.apache.org/jira/browse/ASTERIXDB-3360
Project: Apache AsterixDB
Issue Type: Improvement
Components: STO - Storage
Affects Versions: 0.9.9
Reporter: Wail Y. Alkowaileet
Assignee: Wail Y. Alkowaileet
Fix For: 0.9.9
Compressed page writer always clear the to-be-written ByteBuffer position and
limit to be the entire buffer. This could be fine for writing pages in row
format. However, in columnar format, this might incur compressing and writing
unrelated data (as the ByteBuffer may contain data from a previous write).
Instead of clearing the ByteBuffer position and limit at the compressed page
writer, it should be done during the call to BufferCache#confiscatePage(),
which is the case currently. The compressed page writer, however, should not
re-clear whatever limit is provided.
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