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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4122) improve hbck tool to fix .META. hole issue.
Date Mon, 29 Aug 2011 21:59:37 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4122?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13093249#comment-13093249
] 

stack commented on HBASE-4122:
------------------------------

Here is what the added check_region.rb has different from whats in bin at mo:

{code}
pynchon-590:clean-trunk stack$ diff bin/check_meta.rb /tmp/check_meta.rb 
81a82,87
> def add2meta(metatable, hri)
>     p = Put.new(hri.getRegionName())
>     p.add(HConstants::CATALOG_FAMILY, HConstants::REGIONINFO_QUALIFIER, Writables.getBytes(hri))
>     metatable.put(p)
> end
> 
102,105c108,109
<     p = Put.new(hri.getRegionName())
<     p.add(HConstants::CATALOG_FAMILY, HConstants::REGIONINFO_QUALIFIER, Writables.getBytes(hri))
<     metatable.put(p)
<     LOG.info("Plugged hole in .META. at: " + hri.toString())
---
>     add2meta(metatable, hri)
>     LOG.info("Plugged hole in .META. at: " + hri.toString() + " with region found in
fs")
108c112,116
<   return plugged
---
>   return if plugged
>   # No region found in fs.. so just plug the hole
>   hri = HRegionInfo.new(leftEdge.getTableDesc(), leftEdge.getEndKey(), rightEdge.getStartKey());

>   LOG.info("Plugged hole in .META. after: " + leftEdge.getRegionNameAsString() + " with
" + hri.toString())
>   add2meta(metatable, hri)
{code}


> improve hbck tool to fix .META. hole issue.
> -------------------------------------------
>
>                 Key: HBASE-4122
>                 URL: https://issues.apache.org/jira/browse/HBASE-4122
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: feng xu
>             Fix For: 0.94.0
>
>         Attachments: HBASE-4122.patch, check_meta.rb
>
>
> hbase hbck tool can check the META hole, but it can not fix this problem by --fix.
> I plan to improve the tool.

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