Details
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Task
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Status: Closed
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Critical
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Resolution: Fixed
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None
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None
Description
There is a lot of general confusion over the semantics of the cell timestamp. In particular, a couple questions that often come up:
- If multiple writes to a cell have the same timestamp, are all versions maintained or just the last?
- Is it OK to write cells in a non-increasing timestamp order?
Let's discuss, figure out what semantics make sense, and then move towards (a) documentation, (b) unit tests that prove we have those semantics.
Attachments
Attachments
Issue Links
- blocks
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HBASE-1485 Wrong or indeterminate behavior when there are duplicate versions of a column
- Closed
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HBASE-2649 Make use of storefile 'order' making certain decisions during merge sort
- Closed
- relates to
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HBASE-2256 Delete row, followed quickly to put of the same row will sometimes fail.
- Closed
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HBASE-2847 Put added after a delete is overshadowed if its timestamp is older than than that of the tombstone
- Closed