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From "ramkrishna.s.vasudevan (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-13450) Purge RawBytescomparator from the writers and readers after HBASE-10800
Date Tue, 21 Apr 2015 18:20:59 GMT

     [ https://issues.apache.org/jira/browse/HBASE-13450?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

ramkrishna.s.vasudevan updated HBASE-13450:
-------------------------------------------
    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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