[jira] [Created] (HBASE-16088) hbase restore gives a misleading message if the table doesn't exist

["Ted Yu (JIRA)" <ji...@apache.org>]

Ted Yu created HBASE-16088:
------------------------------

             Summary: hbase restore gives a misleading message if the table doesn't exist
                 Key: HBASE-16088
                 URL: https://issues.apache.org/jira/browse/HBASE-16088
             Project: HBase
          Issue Type: Bug
            Reporter: Ted Yu
            Assignee: Ted Yu
            Priority: Minor


[~cartershanklin] reported the following:

This backup path and ID exist. When an existing table name is used:
{code}
[vagrant@hdp250-hbase ~]$ sudo -u hbase hbase restore /tmp/backup_incremental $FULL_BACKUP_ID TEST_DATA
2016-05-10 18:05:22,380 ERROR [main] impl.RestoreClientImpl: Existing table found in the restore target, please add "-overwrite" option in the command if you mean to restore to these existing tables
2016-05-10 18:05:22,380 INFO  [main] impl.RestoreClientImpl: Existing table list in restore target: [TEST_DATA]
2016-05-10 18:05:22,380 ERROR [main] impl.RestoreClientImpl: ERROR: restore failed with error: Existing table found in target while no "-overwrite" option found
java.io.IOException: Existing table found in target while no "-overwrite" option found
{code}
If I use a table name that doesn't exist I get this:
{code}
[vagrant@hdp250-hbase ~]$ sudo -u hbase hbase restore /tmp/backup_incremental $FULL_BACKUP_ID fda
java.io.IOException: Could not find backup manifest for backup_1462900212093 in /tmp/backup_incremental
{code}
The error message suggests there is some manifest file under /tmp/backup_incremental/backup_1462900212093 and that probably this directory backup_1462900212093 doesn't exist. Looking at the code, it is actually drilling down into a table at this point which is not obvious to me.

If the message said something like "could not find backup manifest (.backup.manifest) for table X within /base/path" I think this would be a lot easier to diagnose.




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