[jira] [Commented] (HBASE-3968) HLog Pretty Printer

["Todd Lipcon (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-3968?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13056667#comment-13056667 ] 

Todd Lipcon commented on HBASE-3968:
------------------------------------

One possible route would be to write a converter to Avro. Then, you'd have all of the existing Avro tooling for doing things like pretty-print, structured grep, etc, plus the advantage that you could easily write mapreduce/hive queries over the converted logs.

> HLog Pretty Printer
> -------------------
>
>                 Key: HBASE-3968
>                 URL: https://issues.apache.org/jira/browse/HBASE-3968
>             Project: HBase
>          Issue Type: New Feature
>          Components: io, regionserver, util
>            Reporter: Nicolas Spiegelberg
>            Assignee: Riley Patterson
>            Priority: Minor
>              Labels: hbase
>
> We currently have a rudimentary way to print HLog data, but it is limited and currently prints key-only information. We need extend this functionality, similar to how we developed HFile's pretty printer. Ideas for functionality:
> - filter by sequence_id
> - filter by row / region
> - option to print values in addition to key info
> - option to print output in JSON format (so scripts can easily parse for analysis)

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