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https://issues.apache.org/jira/browse/HBASE-13450?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ramkrishna.s.vasudevan updated HBASE-13450:
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Description:
Currently KeyValue.RAW_COMPARATOR is written in the Trailer of the HFiles.
Ideally this need not be persisted to the trailer of the Hfiles because only
the ROW bloom and the meta index blocks uses this. Currently RAW_COMPARATOR is
also of type KVComparator.
HBASE-10800 would introduce CellComparator and would expect only cells to be
compared. We cannot have RAW_COMPARATOR a type of CellComparator. Hence it is
better to avoid writing the RAW_COMPARATOR to the FFT and whereever we need
RAW_COMPARATOR we will directly use it as Bytes.BYTES_RAWCOMPARATOR.
was:The RawBytesComparator should not be coming in the HFiles, the writers
and readers as we will be trying to use the Bytes.RAW_COMPARATOR directly. Also
RawBytescomparator can no longer by CellComparator as we would like to deal
with CellComparator for all the comparisons going forward.
> Purge RawBytescomparator from the writers and readers after HBASE-10800
> -----------------------------------------------------------------------
>
> Key: HBASE-13450
> URL: https://issues.apache.org/jira/browse/HBASE-13450
> Project: HBase
> Issue Type: Sub-task
> Reporter: ramkrishna.s.vasudevan
> Assignee: ramkrishna.s.vasudevan
> Fix For: 2.0.0
>
> Attachments: HBASE-13450.patch
>
>
> Currently KeyValue.RAW_COMPARATOR is written in the Trailer of the HFiles.
> Ideally this need not be persisted to the trailer of the Hfiles because only
> the ROW bloom and the meta index blocks uses this. Currently RAW_COMPARATOR
> is also of type KVComparator.
> HBASE-10800 would introduce CellComparator and would expect only cells to be
> compared. We cannot have RAW_COMPARATOR a type of CellComparator. Hence it
> is better to avoid writing the RAW_COMPARATOR to the FFT and whereever we
> need RAW_COMPARATOR we will directly use it as Bytes.BYTES_RAWCOMPARATOR.
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