[jira] [Resolved] (HBASE-13058) Hbase shell command 'scan' for non existent table shows unnecessary info for one unrelated existent table.

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

     [ https://issues.apache.org/jira/browse/HBASE-13058?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

stack resolved HBASE-13058.
---------------------------
       Resolution: Fixed
    Fix Version/s: 1.1.0
                   2.0.0
     Hadoop Flags: Reviewed

Pushed to branch-1+ Thanks for the patch [~a72877]

> Hbase shell command 'scan' for non existent table shows unnecessary info for one unrelated existent table.
> ----------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-13058
>                 URL: https://issues.apache.org/jira/browse/HBASE-13058
>             Project: HBase
>          Issue Type: Bug
>          Components: Client
>            Reporter: Abhishek Kumar
>            Priority: Trivial
>             Fix For: 2.0.0, 1.1.0
>
>         Attachments: 0001-HBASE-13058-Error-messages-in-scan-table.patch, 0001-HBASE-13058-shell-unknown-table-message-update.patch
>
>
> When scanning for a non existent table in hbase shell, error message in shell  sometimes(based on META table content) displays completely unrelated table info , which seems to be unnecessary and inconsistent with other error messages:
> {noformat}
> hbase(main):016:0> scan 'noTable'
> ROW                                              COLUMN+CELL
> ERROR: Unknown table Table 'noTable' was not found, got: hbase:namespace.!
> ---------------------------------------------------------------------------------------------
> hbase(main):017:0> scan '01_noTable'
> ROW                                              COLUMN+CELL
> ERROR: Unknown table 01_noTable!
> --------------------------------------------------
> {noformat}
> Its happening when doing a META table scan (to locate input table ) and scanner stops at row of another table (beyond which table can not exist) in ConnectionManager.locateRegionInMeta:
> {noformat}
> private RegionLocations locateRegionInMeta(TableName tableName, byte[] row,
>                    boolean useCache, boolean retry, int replicaId) throws IOException {
> .................................
> ................................
> // possible we got a region of a different table...
>           if (!regionInfo.getTable().equals(tableName)) {
>             throw new TableNotFoundException(
>                   "Table '" + tableName + "' was not found, got: " +
>                   regionInfo.getTable() + ".");
>           }
> ...............................
> ...............................
> {noformat}
> Here, we can simply put a debug message(if required) and just throw the TableNotFoundException(tableName)  with only tableName instead of with scanner positioned row.



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