HBASE-3468 Broke checkAndPut with null value
--------------------------------------------
Key: HBASE-3793
URL: https://issues.apache.org/jira/browse/HBASE-3793
Project: HBase
Issue Type: Bug
Components: regionserver
Affects Versions: 0.92.0
Reporter: Lars George
Priority: Blocker
Fix For: 0.92.0
The previous code called Bytes.equal() which does a check for "null" on the
left or right argument. Now the comparator calls Bytes.compareTo() - which has
no check for null. But this is a valid input and checks for existence. I
actually noticed this running
https://github.com/larsgeorge/hbase-book/blob/master/ch04/src/main/java/client/CheckAndPutExample.java
This used to work, now it throws an NPE
{noformat}
Caused by: java.lang.NullPointerException
at org.apache.hadoop.hbase.util.Bytes.compareTo(Bytes.java:854)
at
org.apache.hadoop.hbase.filter.WritableByteArrayComparable.compareTo(WritableByteArrayComparable.java:63)
at
org.apache.hadoop.hbase.regionserver.HRegion.checkAndMutate(HRegion.java:1681)
at
org.apache.hadoop.hbase.regionserver.HRegionServer.checkAndMutate(HRegionServer.java:1693)
... 6 more
at
org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getRegionServerWithRetries(HConnectionManager.java:1026)
at org.apache.hadoop.hbase.client.HTable.checkAndPut(HTable.java:750)
at client.CheckAndPutExample.main(CheckAndPutExample.java:33)
{noformat}
Easy fixable, just needs to handle the null value before even calling
comparator.compareTo().
--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira
