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HBase, mail # user - NPE in restore_snapshot


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Lukáš Drbal 2013-08-31, 18:25
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Re: NPE in restore_snapshot
Ted Yu 2013-08-31, 18:34
What version of HBase are you using ?

According to output, the NPE seems to point to the following line
in DisabledTableSnapshotHandler.java (tip of 0.94):

      LOG.info("Starting to write region info and WALs for regions for
offline snapshot:"
          + SnapshotDescriptionUtils.toString(snapshot));

It is unlikely the statement which caused NPE. Knowing the release would
help pinpoint the exact location.

Cheers
On Sat, Aug 31, 2013 at 11:25 AM, Lukáš Drbal <[EMAIL PROTECTED]> wrote:

> Hi,
> i catch NPE when i try restore my snapshot.
>
> Snapshot is taken from online table and exported to another cluster via:
> hbase org.apache.hadoop.hbase.snapshot.ExportSnapshot -snapshot
> fb_posts-2013-08-31 -copy-to hdfs://hadoops-master:9000/hbase -chuser hbase
> -chgroup hbase -mappers 14
>
>
> OT: files on hadoops-master cluster has permission hadoop:hbase (HDFS).
> Maybe a mistake? I specify -chuser and -chroup in export : ) I fix it with
> hadoop fs -chown -R hbase:hbase /hbase
>
> hbase(main):006:0> list_snapshots
> SNAPSHOT                                                              TABLE
> + CREATION
> TIME
>
>  fb_comments-2013-08-27
> fb_comments (Tue Aug 27 08:42:01 +0000
> 2013)
>
>  fb_posts-2013-08-26
> fb_posts (Mon Aug 26 19:26:04 +0000
> 2013)
>
>  fb_posts-2013-08-31
> fb_posts (Sat Aug 31 17:22:52 +0000
> 2013)
>
> 3 row(s) in 0.0220 seconds
>
> SnapshotInfo: http://pastebin.com/dLS6tzTJ
>
> I see here a lot NOT_FOUND files, duno why and that's imho reason for this
> fail.
>
> hbase(main):007:0> list
> TABLE
>
> fb_comments
>
> fb_posts
>
> fb_posts_old
>
> test
>
> 4 row(s) in 0.0180 seconds
>
> fb_posts_old are cloned snapshot from fb_posts-2013-08-26
>
> hbase(main):008:0> is_disabled 'fb_posts'
> true
>
> 0 row(s) in 0.0080 seconds
>
> hbase(main):009:0> restore_snapshot 'fb_posts-2013-08-31'
>
> output error: http://pastebin.com/tFsnGLha
>
> Master log: http://pastebin.com/yfLjJyfc
>
> RS logs are clean :( Log level are set to DEBUG
>
>
> Please excuse my bad english.
>
> --
> Save The World - http://www.worldcommunitygrid.org/
> http://www.worldcommunitygrid.org/stat/viewMemberInfo.do?userName=LesTR
>
> LesTR
>
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Lukáš Drbal 2013-08-31, 18:45
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Matteo Bertozzi 2013-09-01, 20:27
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Lukáš Drbal 2013-09-03, 10:55