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Date: Sat, 22 Sep 2012 08:06:07 +1100 (NCT)
From: "Nitesh Kumar (JIRA)" <jira@apache.org>
To: commits@cassandra.apache.org
Message-ID: <316338076.109536.1348261567669.JavaMail.jiratomcat@arcas>
Subject: [jira] [Created] (CASSANDRA-4700) cql 2 query
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Nitesh Kumar created CASSANDRA-4700:
---------------------------------------

             Summary: cql 2 query
                 Key: CASSANDRA-4700
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4700
             Project: Cassandra
          Issue Type: Bug
          Components: Core
    Affects Versions: 1.2.0 beta 2
         Environment: java
            Reporter: Nitesh Kumar
            Priority: Critical


i was trying to run cql 2 query

cqlsh:stats> UPDATE Minutewise_Product_Stats SET '2LX:OQ:XYZ.com:664230591:1:totalView'='2LX:SOQ:XYZ.com:664230591:1:totalView'+1, '2LX:OQ:XYZ.com:664230591:1:keywordClick'='2LX:SOQ:xyz.com:664230591:1:keywordClick'+1 WHERE KEY='2017:4' ;

WHEN I GOT  this error

ERROR 20:38:46,220 Error occurred during processing of message.
java.lang.NullPointerException
    at org.apache.cassandra.cql.UpdateStatement.prepareRowMutations(UpdateStatement.java:151)
    at org.apache.cassandra.cql.UpdateStatement.prepareRowMutations(UpdateStatement.java:128)
    at org.apache.cassandra.cql.QueryProcessor.batchUpdate(QueryProcessor.java:245)
    at org.apache.cassandra.cql.QueryProcessor.processStatement(QueryProcessor.java:563)
    at org.apache.cassandra.cql.QueryProcessor.process(QueryProcessor.java:817)
    at org.apache.cassandra.thrift.CassandraServer.execute_cql_query(CassandraServer.java:1675)
    at org.apache.cassandra.thrift.Cassandra$Processor$execute_cql_query.getResult(Cassandra.java:3721)
    at org.apache.cassandra.thrift.Cassandra$Processor$execute_cql_query.getResult(Cassandra.java:1)
    at org.apache.thrift.ProcessFunction.process(ProcessFunction.java:32)
    at org.apache.thrift.TBaseProcessor.process(TBaseProcessor.java:34)
    at org.apache.cassandra.thrift.CustomTThreadPoolServer$WorkerProcess.run(CustomTThreadPoolServer.java:184)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
    at java.lang.Thread.run(Thread.java:722)


attached is the patch file  to fix this bug

CQL2fix.patch

diff --git a/src/java/org/apache/cassandra/cql/UpdateStatement.java b/src/java/org/apache/cassandra/cql/UpdateStatement.java
index 3a47712..0caa61b 100644
--- a/src/java/org/apache/cassandra/cql/UpdateStatement.java
+++ b/src/java/org/apache/cassandra/cql/UpdateStatement.java
@@ -146,8 +146,11 @@ public class UpdateStatement extends AbstractModification
         }
 
         CFMetaData metadata = validateColumnFamily(keyspace, columnFamily, hasCommutativeOperation);
-        if (hasCommutativeOperation)
-            cLevel.validateCounterForWrite(metadata);
+        
+        if (hasCommutativeOperation){
+        	ConsistencyLevel currentCLevel = getConsistencyLevel();
+        	currentCLevel.validateCounterForWrite(metadata);
+        }
 
         QueryProcessor.validateKeyAlias(metadata, keyName);
 

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