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From "Sergey Shelukhin (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7690) Improve metadata printing in HFilePrettyPrinter
Date Thu, 14 Feb 2013 21:05:13 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7690?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13578676#comment-13578676
] 

Sergey Shelukhin commented on HBASE-7690:
-----------------------------------------

Bunch of the metadata for SFs is common to all SFMs or not related to any SFMs at all... Maybe
SF itself (or standalone SF PrettyPrinter) should output known fields, and dump unknown metadata
as is?
                
> Improve metadata printing in HFilePrettyPrinter
> -----------------------------------------------
>
>                 Key: HBASE-7690
>                 URL: https://issues.apache.org/jira/browse/HBASE-7690
>             Project: HBase
>          Issue Type: Improvement
>          Components: HFile
>            Reporter: Nick Dimiduk
>            Assignee: Nick Dimiduk
>            Priority: Minor
>         Attachments: 0001-HBASE-7690-Improve-printing-of-HFile-metadata.patch
>
>
> The pretty printer could do a better job with metadata. For example:
> {noformat}
> ...
> Fileinfo:
>     BULKLOAD_SOURCE_TASK = attempt_201301272014_0001_r_000000_0
>     BULKLOAD_TIMESTAMP = \x00\x00\x01<\x7FcG\x8E
>     DELETE_FAMILY_COUNT = \x00\x00\x00\x00\x00\x00\x00\x00
>     EARLIEST_PUT_TS = \x00\x00\x01<\x7Fc&F
>     EXCLUDE_FROM_MINOR_COMPACTION = \x00
>     KEY_VALUE_VERSION = \x00\x00\x00\x01
>     MAJOR_COMPACTION_KEY = \xFF
>     MAX_MEMSTORE_TS_KEY = \x00\x00\x00\x00\x00\x00\x00\x00
>     TIMERANGE = 1359346869830....1359346869830
>     hfile.AVG_KEY_LEN = 19
>     hfile.AVG_VALUE_LEN = 2
>     hfile.LASTKEY = \x00\x04row9\x01dc2\x00\x00\x01<\x7Fc&F\x04
> ...
> {noformat}
> May of these fields could be cleaned up to print in human-readable values.

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