[jira] Commented: (HBASE-1912) When adding a secondary index to an existing table, it will cause NPE during re-indexing.

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

    [ https://issues.apache.org/jira/browse/HBASE-1912?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12766576#action_12766576 ] 

Andrew Purtell commented on HBASE-1912:
---------------------------------------

+1

Thanks for the bug report and patch Ray. Much appreciated. 

> When adding a secondary index to an existing table, it will cause NPE during re-indexing. 
> ------------------------------------------------------------------------------------------
>
>                 Key: HBASE-1912
>                 URL: https://issues.apache.org/jira/browse/HBASE-1912
>             Project: Hadoop HBase
>          Issue Type: Bug
>          Components: contrib
>    Affects Versions: 0.20.0, 0.20.1
>            Reporter: Mingjui Ray Liao
>            Priority: Minor
>         Attachments: hbase-site.xml, IndexedTableTest.java, IndexSpecification.patch
>
>
> When adding a secondary index to an existing table, an IndexSpecification must be constructed.
> If we construct a simple index using the following constructor: IndexSpecification(String indexId, byte[] indexedColumn), then the program will cause NPE during re-indexing. 
>     
> Exception in thread "main" java.lang.NullPointerException
>         at org.apache.hadoop.hbase.regionserver.tableindexed.IndexMaintenanceUtils.createIndexUpdate(IndexMaintenanceUtils.java:57)
>         at org.apache.hadoop.hbase.client.tableindexed.IndexedTableAdmin.reIndexTable(IndexedTableAdmin.java:144)
>         at org.apache.hadoop.hbase.client.tableindexed.IndexedTableAdmin.addIndex(IndexedTableAdmin.java:132)
>         at MyIndexedTable.addSecondaryIndexToExistingTable(MyIndexedTable.java:256)
>         at MyIndexedTable.main(MyIndexedTable.java:276)

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