Hi, I am new to Cassandra and I am exploring the Hadoop integration (MapReduce) provided by Cassandra.
I am trying to run the hadoop examples provided in the cassandra's repo under examples/hadoop_cql3_word_count. I am using the cassandra-2.0 branch. I have a single node cassandra running locally. I was able to run the ./bin/word_count_setup step successfully but when I run the ./bin/word_count step I am getting the following error : java.lang.RuntimeException at org.apache.cassandra.hadoop.cql3.CqlPagingRecordReader$RowIterator.executeQuery(CqlPagingRecordReader.java:661) at org.apache.cassandra.hadoop.cql3.CqlPagingRecordReader$RowIterator.(CqlPagingRecordReader.java:297) at org.apache.cassandra.hadoop.cql3.CqlPagingRecordReader.initialize(CqlPagingRecordReader.java:163) at org.apache.hadoop.mapred.MapTask$NewTrackingRecordReader.initialize(MapTask.java:522) at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:763) at org.apache.hadoop.mapred.MapTask.run(MapTask.java:370) at org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:212) Caused by: InvalidRequestException(why:consistency level LOCAL_ONE not compatible with replication strategy (org.apache.cassandra.locator.SimpleStrategy)) at org.apache.cassandra.thrift.Cassandra$execute_prepared_cql3_query_result$execute_prepared_cql3_query_resultStandardScheme.read(Cassandra.java:52627) at org.apache.cassandra.thrift.Cassandra$execute_prepared_cql3_query_result$execute_prepared_cql3_query_resultStandardScheme.read(Cassandra.java:52604) at org.apache.cassandra.thrift.Cassandra$execute_prepared_cql3_query_result.read(Cassandra.java:52519) at org.apache.thrift.TServiceClient.receiveBase(TServiceClient.java:78) at org.apache.cassandra.thrift.Cassandra$Client.recv_execute_prepared_cql3_query(Cassandra.java:1785) at org.apache.cassandra.thrift.Cassandra$Client.execute_prepared_cql3_query(Cassandra.java:1770) at org.apache.cassandra.hadoop.cql3.CqlPagingRecordReader$RowIterator.executeQuery(CqlPagingRecordReader.java:631) ... 6 more ------------------------------ Has anyone seen this before ? Am I missing something ? -- Best, Parth
