[
https://issues.apache.org/jira/browse/HBASE-10323?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13961878#comment-13961878
]
Ted Yu commented on HBASE-10323:
--------------------------------
Created HBASE-10921 for the backport.
> Auto detect data block encoding in HFileOutputFormat
> ----------------------------------------------------
>
> Key: HBASE-10323
> URL: https://issues.apache.org/jira/browse/HBASE-10323
> Project: HBase
> Issue Type: Improvement
> Components: mapreduce
> Reporter: Ishan Chhabra
> Assignee: Ishan Chhabra
> Fix For: 0.98.0, 0.99.0
>
> Attachments: HBASE_10323-0.94.15-v1.patch,
> HBASE_10323-0.94.15-v2.patch, HBASE_10323-0.94.15-v3.patch,
> HBASE_10323-0.94.15-v4.patch, HBASE_10323-0.94.15-v5.patch,
> HBASE_10323-trunk-v1.patch, HBASE_10323-trunk-v2.patch,
> HBASE_10323-trunk-v3.patch, HBASE_10323-trunk-v4.patch
>
>
> Currently, one has to specify the data block encoding of the table explicitly
> using the config parameter
> "hbase.mapreduce.hfileoutputformat.datablock.encoding" when doing a bulkload
> load. This option is easily missed, not documented and also works differently
> than compression, block size and bloom filter type, which are auto detected.
> The solution would be to add support to auto detect datablock encoding
> similar to other parameters.
> The current patch does the following:
> 1. Automatically detects datablock encoding in HFileOutputFormat.
> 2. Keeps the legacy option of manually specifying the datablock encoding
> around as a method to override auto detections.
> 3. Moves string conf parsing to the start of the program so that it fails
> fast during starting up instead of failing during record writes. It also
> makes the internals of the program type safe.
> 4. Adds missing doc strings and unit tests for code serializing and
> deserializing config paramerters for bloom filer type, block size and
> datablock encoding.
--
This message was sent by Atlassian JIRA
(v6.2#6252)
