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Posted to issues@hbase.apache.org by "Lars Hofhansl (Updated) (JIRA)" <ji...@apache.org> on 2012/03/21 02:06:39 UTC
[jira] [Updated] (HBASE-5604) HLog replay tool that generates
HFiles for use by LoadIncrementalHFiles.
[ https://issues.apache.org/jira/browse/HBASE-5604?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Lars Hofhansl updated HBASE-5604:
---------------------------------
Description:
Just an idea I had. Might be useful for restore of a backup using the HLogs.
This could an M/R (with a mapper per HLog file).
The tool would get a timerange and a (set of) table(s). We'd pick the right HLogs based on time before the M/R job is started and then have a mapper per HLog file.
The mapper would then go through the HLog, filter all WALEdits that didn't fit into the time range or are not any of the tables and then uses HFileOutputFormat to generate HFiles.
Would need to indicate the splits we want, probably from a life table.
was:
Just an idea I had. Might be useful for restore of a backup using the HLogs.
This could either be a standalone tool and or an M/R (with a mapper per HLog file).
> HLog replay tool that generates HFiles for use by LoadIncrementalHFiles.
> ------------------------------------------------------------------------
>
> Key: HBASE-5604
> URL: https://issues.apache.org/jira/browse/HBASE-5604
> Project: HBase
> Issue Type: New Feature
> Reporter: Lars Hofhansl
>
> Just an idea I had. Might be useful for restore of a backup using the HLogs.
> This could an M/R (with a mapper per HLog file).
> The tool would get a timerange and a (set of) table(s). We'd pick the right HLogs based on time before the M/R job is started and then have a mapper per HLog file.
> The mapper would then go through the HLog, filter all WALEdits that didn't fit into the time range or are not any of the tables and then uses HFileOutputFormat to generate HFiles.
> Would need to indicate the splits we want, probably from a life table.
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