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Date: Fri, 31 Jan 2014 16:10:10 +0100
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Subject: Re: Snapshot clone error
From: David Koch <ogdude@googlemail.com>
To: user@hbase.apache.org
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Matteo,

Thank you for your reply. All clients, servers are using the same version:

14/01/31 16:06:20 INFO util.VersionInfo: HBase 0.94.6-cdh4.5.0

Also, the information generated by:

hbase org.apache.hadoop.hbase.snapshot.SnapshotInfo -snapshot

is identical for snapshots which I managed to clone and those for which the
cloning/restoration failed. Would you advise re-trying snaphotting the
table while it is disabled? Otherwise I'll go with old-fashioned CopyTable
or re-import into HBase from HDFS files.

Thank you,

/David


On Fri, Jan 31, 2014 at 2:42 PM, Matteo Bertozzi <theo.bertozzi@gmail.com>wrote:

> the snapshot seems to be corrupted, which version are you running?
>
> Matteo
>
>
>
> On Fri, Jan 31, 2014 at 1:06 PM, David Koch <ogdude@googlemail.com> wrote:
>
> > Hello,
> >
> > We export an online snapshot of a table to a different cluster, when
> > attempting a clone on the destination cluster using:
> >
> > clone_snapshot 'table_source_snapshot', 'table_dest'
> >
> > it does not work.
> >
> > The operation times out after a a while
> >
> > ERROR: java.io.IOException: Table 'table_dest' not yet enabled, after
> > 1996939ms.
> >
> > and I see only a fraction of the number of regions in the destination
> > table. Table is indicated as "enabled" but I cannot perform any scans on
> > it.
> >
> > The snapshot info returns the following:
> >
> > Snapshot Info
> > ----------------------------------------
> >    Name: table_source_snapshot
> >    Type: FLUSH
> >   Table: table_source
> >  Format: 0
> > Created: 2014-01-30T13:05:02
> >
> > Snapshot seems to be intact. What could be the error? Should I take an
> > offline snapshot instead? Going via restore/enable instead of clone does
> > not seem to work either.
> >
> > Also, I see the following in the region servers:
> >
> > 2:24:35.807 PM ERROR
> > org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler
> > Failed open of
> > region=
> >
> table_source,\x82\x12Y\x00\xE98C\xEE\xBC\xCC\xE3h\xDAPt\xA6,1366259070788.63ca017ac7cd03e68c35a4da8b56421d.,
> > starting to roll back the global memstore size.
> > java.io.IOException: java.io.IOException: java.io.FileNotFoundException:
> > Unable to open link: org.apache.hadoop.hbase.io.HFileLink
> >
> >
> locations=[hdfs://nameservice1/hbase/table_source/816bb88c6f3524a877f4cb7ce747fec1/t/c3b37dc11e684626a5b464a25a75735c,
> >
> >
> hdfs://nameservice1/hbase/.tmp/table_source/816bb88c6f3524a877f4cb7ce747fec1/t/c3b37dc11e684626a5b464a25a75735c,
> >
> >
> hdfs://nameservice1/hbase/.archive/table_source/816bb88c6f3524a877f4cb7ce747fec1/t/c3b37dc11e684626a5b464a25a75735c]
> >
> > None of these parts actually exist, however:
> >
> >
> hdfs://nameservice1/hbase/.snapshot/table_source_snapshot/816bb88c6f3524a877f4cb7ce747fec1/t/c3b37dc11e684626a5b464a25a75735c
> > does exist.
> >
> > I don't think that's the issue though, since I applied the same steps to
> a
> > smaller table and it worked.
> >
> > Any advice is appreciated,
> >
> > Regards,
> >
> > /David
> >
>

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