[jira] [Resolved] (HBASE-5403) Checkpoint the compressed HLog

["Andrew Kyle Purtell (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-5403?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrew Kyle Purtell resolved HBASE-5403.
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    Resolution: Won't Fix

> Checkpoint the compressed HLog
> ------------------------------
>
>                 Key: HBASE-5403
>                 URL: https://issues.apache.org/jira/browse/HBASE-5403
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Liyin Tang
>            Assignee: Liyin Tang
>            Priority: Major
>
> Let's assume that HBase replication can be based on replaying the HLog in the replica cluster.
> The replica process could be crash during the replay. Obviously, the replica process need a way to start from the lastest check point in the HLog, even the HLog is compressed.
> So the proposal is to write a series of checkpoints within the HLog. 
> Each each checkpoint will have a header with some special sequence of bytes.
> And between each checkpoints, HLog should use new dictionaries to compress.



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