Dear users, We have got very strange beheviour of hadoop cluster after upgrading Cassandra from 1.1.5 to Cassandra 1.2.1. We have 5 nodes cluster of Cassandra, where three of them are hodoop slaves. Now when we are submitting job through Pig script, only one map task runs on one of the hadoop slaves regardless of volumume of datas (already tried with more than million rows). Configure of pig as follows: export PIG_HOME=/oracle/pig-0.10.0 export PIG_CONF_DIR=${HADOOP_HOME}/conf export PIG_INITIAL_ADDRESS=192.168.157.103 export PIG_RPC_PORT=9160 export PIG_PARTITIONER=org.apache.cassandra.dht.Murmur3Partitioner
Also we have these following properties in hadoop: <property> <name>mapred.tasktracker.map.tasks.maximum</name> <value>10</value> </property> <property> <name>mapred.map.tasks</name> <value>4</value> </property> Any hint or suggestion will be very appreciated. Thank'x in advance Shamim