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From jmhs...@apache.org
Subject svn commit: r1310434 - in /hbase/branches/0.92: CHANGES.txt src/main/java/org/apache/hadoop/hbase/master/HMaster.java
Date Fri, 06 Apr 2012 16:07:25 GMT
Author: jmhsieh
Date: Fri Apr  6 16:07:25 2012
New Revision: 1310434

URL: http://svn.apache.org/viewvc?rev=1310434&view=rev
Log:
HBASE-5680 Improve compatibility warning about HBase with Hadoop 0.23.x

Modified:
    hbase/branches/0.92/CHANGES.txt
    hbase/branches/0.92/src/main/java/org/apache/hadoop/hbase/master/HMaster.java

Modified: hbase/branches/0.92/CHANGES.txt
URL: http://svn.apache.org/viewvc/hbase/branches/0.92/CHANGES.txt?rev=1310434&r1=1310433&r2=1310434&view=diff
==============================================================================
--- hbase/branches/0.92/CHANGES.txt (original)
+++ hbase/branches/0.92/CHANGES.txt Fri Apr  6 16:07:25 2012
@@ -27,6 +27,7 @@ Release 0.92.2 - Unreleased
                (Prakash)
    HBASE-5724  Row cache of KeyValue should be cleared in readFields().
                (Teruyoshi Zenmyo)
+   HBASE-5680  Improve compatibilty warning about HBase with Hadoop 0.23.x
 
   IMPROVEMENTS
    HBASE-5592  Make it easier to get a table from shell (Ben West)

Modified: hbase/branches/0.92/src/main/java/org/apache/hadoop/hbase/master/HMaster.java
URL: http://svn.apache.org/viewvc/hbase/branches/0.92/src/main/java/org/apache/hadoop/hbase/master/HMaster.java?rev=1310434&r1=1310433&r2=1310434&view=diff
==============================================================================
--- hbase/branches/0.92/src/main/java/org/apache/hadoop/hbase/master/HMaster.java (original)
+++ hbase/branches/0.92/src/main/java/org/apache/hadoop/hbase/master/HMaster.java Fri Apr
 6 16:07:25 2012
@@ -341,7 +341,17 @@ Server {
         loop();
       }
     } catch (Throwable t) {
-      abort("Unhandled exception. Starting shutdown.", t);
+      // HBASE-5680: Likely hadoop23 vs hadoop 20.x/1.x incompatibility
+      if (t instanceof NoClassDefFoundError && 
+          t.getMessage().contains("org/apache/hadoop/hdfs/protocol/FSConstants$SafeModeAction"))
{
+          // improved error message for this special case
+          abort("HBase is having a problem with its Hadoop jars.  You may need to "
+              + "recompile HBase against Hadoop version "
+              +  org.apache.hadoop.util.VersionInfo.getVersion()
+              + " or change your hadoop jars to start properly", t);
+      } else {
+        abort("Unhandled exception. Starting shutdown.", t);
+      }
     } finally {
       startupStatus.cleanup();
       



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