[HBASE-1934] NullPointerException in ClientScanner

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.20.1
• Fix Version/s: 0.20.2, 0.90.0
• Assignee: Andrew Kyle Purtell
• Reporter: Daniel Ploeg
• Created: 25/Oct/09 21:01
• Updated: 12/Oct/12 06:13
• Resolved: 26/Oct/09 05:31

Description

The following stack trace was observed whilst loading a large volume of data into Hbase:

Caused by: java.lang.NullPointerException
at org.apache.hadoop.hbase.client.HTable$ClientScanner.next(HTable.java:2008)
at org.apache.hadoop.hbase.client.HTable$ClientScanner$1.hasNext(HTable.java:2089)

It appears that lastResult is initialized to be null, however in the exception handling code there isn't any null checking before the field is accessed for get row:

this.scan.setStartRow(this.lastResult.getRow());

There should be some additional null checking logic here.