Jonathan Natkins created HBASE-8521:
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Summary: Cells cannot be overwritten with bulk loaded HFiles
Key: HBASE-8521
URL: https://issues.apache.org/jira/browse/HBASE-8521
Project: HBase
Issue Type: Bug
Affects Versions: 0.92.1
Reporter: Jonathan Natkins
Let's say you have a pre-built HFile that contains a cell:
('rowkey1', 'family1', 'qual1', 1234L, 'value1')
We bulk load this first HFile. Now, let's create a second HFile that contains a
cell that overwrites the first:
('rowkey1', 'family1', 'qual1', 1234L, 'value2')
That gets bulk loaded into the table, but the value that HBase bubbles up is
still 'value1'.
It seems that there's no way to overwrite a cell for a particular timestamp
without an explicit put operation. This seems to be the case even after minor
and major compactions happen.
My guess is that this is pretty closely related to the sequence number work
being done on the compaction algorithm via HBASE-7842, but I'm not sure if one
of would fix the other.
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