Jerry,
Can you elaborate on what you mean by "export table to hdfs"? I
initially tried running the export on src cluster (-copy-to
hdfs://dest/hbase ), it complains while trying to write the data to dest
cluster (due to the hdfs protocol version mismatch). Then I tried running
export on dest cluster (-copy-from hftp://src/hbase).
On Mon, Sep 15, 2014 at 10:36 PM, Jerry He <jerry...@gmail.com> wrote:
> While you continue on the snapshot approach, have you tried to Export the
> table in 0.94 to hdfs, and then Import the data from hdfs to 0.98?
> On Sep 15, 2014 10:19 PM, "Matteo Bertozzi" <theo.berto...@gmail.com>
> wrote:
>
> > can you post the full exception and the file path ?
> > maybe there is a bug in looking up the reference file.
> > It seems to not be able to find enough data in the file...
> >
> > Matteo
> >
> >
> > On Mon, Sep 15, 2014 at 10:08 PM, Gautam <gautamkows...@gmail.com>
> wrote:
> >
> > > Thanks for the reply Matteo.
> > >
> > > This is exactly what I did. I modified the source cluster's dir
> structure
> > > to mimic that of the 98 cluster. I even got as far as it trying to look
> > > through the reference files.
> > >
> > > I end up with this exception :
> > >
> > > 14/09/15 23:34:59 ERROR snapshot.ExportSnapshot: Snapshot export failed
> > > java.io.IOException
> > > at
> > >
> > >
> >
> org.apache.hadoop.hbase.snapshot.SnapshotManifestV1.loadRegionManifests(SnapshotManifestV1.java:145)
> > > at
> > >
> > >
> >
> org.apache.hadoop.hbase.snapshot.SnapshotManifest.load(SnapshotManifest.java:265)
> > > at
> > >
> > >
> >
> org.apache.hadoop.hbase.snapshot.SnapshotManifest.open(SnapshotManifest.java:119)
> > > at
> > >
> > >
> >
> org.apache.hadoop.hbase.snapshot.SnapshotReferenceUtil.visitTableStoreFiles(SnapshotReferenceUtil.java:125)
> > > ...
> > > ..
> > > Caused by: java.io.IOException: read=-1, wanted=4
> > > at org.apache.hadoop.hbase.io.Reference.read(Reference.java:175)
> > > at
> > >
> > >
> >
> org.apache.hadoop.hbase.regionserver.StoreFileInfo.<init>(StoreFileInfo.java:115)
> > > at
> > >
> > >
> >
> org.apache.hadoop.hbase.regionserver.HRegionFileSystem.getStoreFiles(HRegionFileSystem.java
> > > ..
> > >
> > >
> > > This and Ted's reply about HBASE-7987 leads me to believe that the
> export
> > > tool from my distro is in capable of working around the regionManifest
> > file
> > > requirement. I'm now left with the option of downgrading my dest
> cluster
> > to
> > > 94, copying data and then upgrading using the upgrade migration tool.
> > > Wanted to know if others have tried this or there are other things I
> can
> > > do. If not, i'l just go ahead and do this :-)
> > >
> > >
> > > Cheers,
> > > -Gautam.
> > >
> > >
> > >
> > > On Mon, Sep 15, 2014 at 8:10 PM, Matteo Bertozzi <
> > theo.berto...@gmail.com>
> > > wrote:
> > >
> > > > 94 and 98 differs in directory layout
> > > > so 98 is not able to read 94 layout unless you run the migration tool
> > > > which is basically moving all the data in a "default" namespace
> > directory
> > > > e.g.
> > > > /hbase/table -> /hbase/data/default/table
> > > > /hbase/.archive/table -> /hbase/archive/default/table
> > > >
> > > > Matteo
> > > >
> > > >
> > > > On Mon, Sep 15, 2014 at 6:17 PM, Gautam <gautamkows...@gmail.com>
> > wrote:
> > > >
> > > > > Yep, looks like the CDH distro backports HBASE-7987. Having said
> > that,
> > > is
> > > > > there a transition path for us or are we hosed :-) ? In general,
> > what's
> > > > the
> > > > > recommended way to achieve this, at this point I feel i'm going
> > around
> > > > the
> > > > > system to achieve what I want. If nothing else works with export
> > > snapshot
> > > > > should I just downgrade to 94, export snapshot and then upgrade to
> > 98?
> > > Is
> > > > > the upgrade migration path different from what export snapshot does
> > > (i'd
> > > > > imagine yes)?
> > > > >
> > > > > Cheers,
> > > > > -Gautam.
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > On Mon, Sep 15, 2014 at 5:14 PM, Ted Yu <yuzhih...@gmail.com>
> wrote:
> > > > >
> > > > > > bq. 98.1 on dest cluster
> > > > > >
> > > > > > Looking at the history for SnapshotManifestV1, it came with
> > > HBASE-7987
> > > > > > which went to 0.99.0
> > > > > >
> > > > > > Perhaps you're using a distro with HBASE-7987 ?
> > > > > >
> > > > > > On Mon, Sep 15, 2014 at 4:58 PM, Gautam <gautamkows...@gmail.com
> >
> > > > wrote:
> > > > > >
> > > > > > > Hello,
> > > > > > > I'm trying to copy data between Hbase clusters on
> > > different
> > > > > > > versions. I am using :
> > > > > > >
> > > > > > > /usr/bin/hbase org.apache.hadoop.hbase.snapshot.ExportSnapshot
> > > > > > > -chuser hbase
> > > > > > > -chgroup hadoop
> > > > > > > -snapshot msg_snapshot
> > > > > > > -mappers 50
> > > > > > > -copy-from hftp://src-cluster:50070/hbase
> > > > > > > -copy-to hdfs:/dest-cluster:8020/hbase
> > > > > > >
> > > > > > >
> > > > > > > Till now, based on various tips from the mailing list, I have
> > > > modified
> > > > > > the
> > > > > > > source cluster data dir paths to mimic the 98 convention
> > (archive,
> > > > > table
> > > > > > > data paths, etc). This helped in jumping some roadblocks but
> not
> > > all.
> > > > > > >
> > > > > > > This is what I see now :
> > > > > > >
> > > > > > >
> > > > > > > 14/09/15 23:34:59 ERROR snapshot.ExportSnapshot: Snapshot
> export
> > > > failed
> > > > > > > java.io.IOException
> > > > > > > at
> > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> org.apache.hadoop.hbase.snapshot.SnapshotManifestV1.loadRegionManifests(SnapshotManifestV1.java:145)
> > > > > > > at
> > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> org.apache.hadoop.hbase.snapshot.SnapshotManifest.load(SnapshotManifest.java:265)
> > > > > > > at
> > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> org.apache.hadoop.hbase.snapshot.SnapshotManifest.open(SnapshotManifest.java:119)
> > > > > > > at
> > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> org.apache.hadoop.hbase.snapshot.SnapshotReferenceUtil.visitTableStoreFiles(SnapshotReferenceUtil.java:125)
> > > > > > > ...
> > > > > > > ..
> > > > > > > Caused by: java.io.IOException: read=-1, wanted=4
> > > > > > > at
> org.apache.hadoop.hbase.io.Reference.read(Reference.java:175)
> > > > > > > at
> > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> org.apache.hadoop.hbase.regionserver.StoreFileInfo.<init>(StoreFileInfo.java:115)
> > > > > > > at
> > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> org.apache.hadoop.hbase.regionserver.HRegionFileSystem.getStoreFiles(HRegionFileSystem.java
> > > > > > > ..
> > > > > > >
> > > > > > >
> > > > > > > Fails while trying to read refernce hfile. Is this something
> > folks
> > > > have
> > > > > > > done before and/or is possible to do? I'd really like to do
> this
> > > > > without
> > > > > > > having to upgrade my source cluster or downgrade my dest
> cluster.
> > > > > > >
> > > > > > > I'm using 94.6 on source cluster and 98.1 on dest cluster.
> > > > > > >
> > > > > > >
> > > > > > > Cheers,
> > > > > > > -Gautam.
> > > > > > >
> > > > > >
> > > > >
> > > > >
> > > > >
> > > > > --
> > > > > "If you really want something in this life, you have to work for
> it.
> > > Now,
> > > > > quiet! They're about to announce the lottery numbers..."
> > > > >
> > > >
> > >
> > >
> > >
> > > --
> > > "If you really want something in this life, you have to work for it.
> Now,
> > > quiet! They're about to announce the lottery numbers..."
> > >
> >
>
--
"If you really want something in this life, you have to work for it. Now,
quiet! They're about to announce the lottery numbers..."
