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https://issues.apache.org/jira/browse/HBASE-4388?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13133489#comment-13133489
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Ted Yu commented on HBASE-4388:
-------------------------------
bq. MetaMigrationRemovingHTD is deprecated already. Its going away before we
release 0.94
I think the assumption in the above statement is that users (of 0.20.6 and
0.89) would upgrade through 0.92 before upgrading to 0.94 (when 0.94 is
released).
Not carrying the burden of migration logic is good for development. On the
other hand, it is not convenient for users.
I am fine with the above assumption. We just need to explicitly state it
somewhere.
Minor comment:
{code}
this.htds.add(htd);
this.services.getMasterFileSystem().createTableDescriptor(htd);
{code}
I think the order of the above two statements should be reverted because the
second call may throw IOException.
> Second start after migration from 90 to trunk crashes
> -----------------------------------------------------
>
> Key: HBASE-4388
> URL: https://issues.apache.org/jira/browse/HBASE-4388
> Project: HBase
> Issue Type: Bug
> Components: master, migration
> Affects Versions: 0.92.0
> Reporter: Todd Lipcon
> Assignee: stack
> Priority: Blocker
> Fix For: 0.92.0
>
> Attachments: 4388-v2.txt, 4388-v3.txt, 4388-v4.txt, 4388.txt,
> hbase-4388-root.dir.tgz, hbase-master-nase.log, meta.tgz
>
>
> I started a trunk cluster to upgrade from 90, inserted a ton of data, then
> did a clean shutdown. When I started again, I got the following exception:
> 11/09/13 12:29:09 INFO master.HMaster: Meta has HRI with HTDs. Updating meta
> now.
> 11/09/13 12:29:09 FATAL master.HMaster: Unhandled exception. Starting
> shutdown.
> java.lang.NegativeArraySizeException: -102
> at org.apache.hadoop.hbase.util.Bytes.readByteArray(Bytes.java:147)
> at
> org.apache.hadoop.hbase.HTableDescriptor.readFields(HTableDescriptor.java:606)
> at
> org.apache.hadoop.hbase.migration.HRegionInfo090x.readFields(HRegionInfo090x.java:641)
> at
> org.apache.hadoop.hbase.util.Writables.getWritable(Writables.java:133)
> at
> org.apache.hadoop.hbase.util.Writables.getWritable(Writables.java:103)
> at
> org.apache.hadoop.hbase.util.Writables.getHRegionInfoForMigration(Writables.java:228)
> at
> org.apache.hadoop.hbase.catalog.MetaEditor.getHRegionInfoForMigration(MetaEditor.java:350)
> at
> org.apache.hadoop.hbase.catalog.MetaEditor$1.visit(MetaEditor.java:273)
> at
> org.apache.hadoop.hbase.catalog.MetaReader.fullScan(MetaReader.java:633)
> at
> org.apache.hadoop.hbase.catalog.MetaReader.fullScan(MetaReader.java:255)
> at
> org.apache.hadoop.hbase.catalog.MetaReader.fullScan(MetaReader.java:235)
> at
> org.apache.hadoop.hbase.catalog.MetaEditor.updateMetaWithNewRegionInfo(MetaEditor.java:284)
> at
> org.apache.hadoop.hbase.catalog.MetaEditor.migrateRootAndMeta(MetaEditor.java:298)
> at
> org.apache.hadoop.hbase.master.HMaster.updateMetaWithNewHRI(HMaster.java:529)
> at
> org.apache.hadoop.hbase.master.HMaster.finishInitialization(HMaster.java:472)
> at org.apache.hadoop.hbase.master.HMaster.run(HMaster.java:309)
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