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From "Jean-Daniel Cryans (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5415) FSTableDescriptors should handle random folders in hbase.root.dir better
Date Thu, 23 Feb 2012 23:07:48 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5415?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13215175#comment-13215175
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Jean-Daniel Cryans commented on HBASE-5415:
-------------------------------------------

bq. Whats difference between miscellaneous dirs under hbase.rootdir and an actual table directory
that is missing its .tableinfo file?

Former's HTD is null, latter gets a FNFE.

bq. We're changing our API when we remove TEE from public methods?

Technically no, TEE (and FNFE FWIW) are both IOEs so there's no change there. I removed TEE
specifically because it isn't thrown anymore.
                
> FSTableDescriptors should handle random folders in hbase.root.dir better
> ------------------------------------------------------------------------
>
>                 Key: HBASE-5415
>                 URL: https://issues.apache.org/jira/browse/HBASE-5415
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.92.0
>            Reporter: Jean-Daniel Cryans
>            Priority: Critical
>             Fix For: 0.92.1, 0.94.0
>
>         Attachments: HBASE-5415.patch
>
>
> I faked an upgrade on a test cluster using our dev data so I had to distcp the data between
the two clusters, but after starting up and doing the migration and whatnot the web UI didn't
show any table. The reason was in the master's log:
> {quote}
> org.apache.hadoop.hbase.TableExistsException: No descriptor for _distcp_logs_e0ehek
>         at org.apache.hadoop.hbase.util.FSTableDescriptors.get(FSTableDescriptors.java:164)
>         at org.apache.hadoop.hbase.util.FSTableDescriptors.getAll(FSTableDescriptors.java:182)
>         at org.apache.hadoop.hbase.master.HMaster.getHTableDescriptors(HMaster.java:1554)
>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>         at java.lang.reflect.Method.invoke(Method.java:597)
>         at org.apache.hadoop.hbase.ipc.WritableRpcEngine$Server.call(WritableRpcEngine.java:364)
>         at org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:1326)
> {quote}
> I don't think we need to show a full stack (just a WARN maybe), this shouldn't kill the
request (still see tables in the web UI), and why is that a TableExistsException?

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