Hadoop Jar Files

Hi, I have extracted the hadoop-0.20.2, hadoop-0.20.203.0 and hadoop-0.21.0 files. In the hadoop-0.21.0 folder the hadoop-hdfs-0.21.0.jar, hadoop-mapred-0.21.0.jar and the hadoop-common-0.21.0.jar files are there. But in the hadoop-0.20.2 and the hadoop-0.20.203.0 releases the same files are

Re: How to create a lot files in HDFS quickly?

I don't know what your use case is, but you may want to investigate things like hbase or Cassandra or voldemort if you need lots of small files --- Ian Holsman - 703 879-3128 I saw the angel in the marble and carved until I set him free -- Michelangelo On 30/05/2011, at 12:54 AM, Konstantin

What's datanode doing when logging 'Verification succeeded for blk_.' ?

Hi,all I found NameNode often lost heartbeat from DataNodes: org.apache.hadoop.hdfs.StateChange: BLOCK* NameSystem.heartbeatCheck: lost heartbeat from 192.168.1.101:50010 org.apache.hadoop.net.NetworkTopology: Removing a node: /default-rack/102.168.1.101:50010 meanwhile NN logs: