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Posted to dev@hbase.apache.org by "Jeff Hammerbacher (JIRA)" <ji...@apache.org> on 2009/12/19 03:43:18 UTC
[jira] Commented: (HBASE-2055) Serialize WAL as Avro records
[ https://issues.apache.org/jira/browse/HBASE-2055?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12792760#action_12792760 ]
Jeff Hammerbacher commented on HBASE-2055:
------------------------------------------
Additional criteria: Avro has clients for reading and writing data files in several languages which will facilitate writing debugging and profiling utilities.
> Serialize WAL as Avro records
> -----------------------------
>
> Key: HBASE-2055
> URL: https://issues.apache.org/jira/browse/HBASE-2055
> Project: Hadoop HBase
> Issue Type: Improvement
> Reporter: Andrew Purtell
> Assignee: Andrew Purtell
> Priority: Minor
>
> There was some advocacy of using Avro for serialization of HBase WAL records up on hbase-dev@. Idea is Hadoop core is getting away from Writables and Avro is the blessed replacement.
> I think we have this criteria for its use:
> 1) Performance of writing Avro records is no worse than that for writing Writables into a SequenceFile.
> 2) Space consumed by Avro serialization is no worse than that of Writables
> 3) File format is amenable to appends (cannot require valid trailers, etc.)
> I'll put up a patch so we can try it out.
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