Change HBase StoreKey format
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Key: HBASE-1234
URL: https://issues.apache.org/jira/browse/HBASE-1234
Project: Hadoop HBase
Issue Type: Improvement
Reporter: stack
Fix For: 0.20.0
HBASE-859 cleaned up keys removing the need of HRegionInfo being in the context
comparing keys. This issue is about changing the format. Work done in
HBASE-859 means changes have been localized to HStoreKey, in particular to
comparators and parse routines. We should do this now since 0.20.0 will
require rewriting all data.
Things to consider:
<row> <columnfamily> <columnqualifier> <timestamp> <keytype>
Or leave off columnfamily altogether and just write it once into the hfile
metadata (All key compares are done in the Store context so columnfamily can be
safely left out of the equation; its only when the key rises above Store that
the columnfamily needs appending).
keytype is probably a byte. Types are delete cell, delete row, delete family,
delete column? What else? Where should we put it? At the end? How should
type sort? Or should it not be part of sort so its just the order at which we
encounter the key?
How are we going to support keys that go in out of chronological order?
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