Hi, I'm trying to run Hadoop Junit tests in IDE, but I got errors. I've the mapreduce running properly. I'm using the version Hadoop 1.0.3: * * 2012-08-10 13:53:05,803 ERROR mapred.MiniMRCluster (MiniMRCluster.java:run(119)) - Job tracker crashed java.lang.NullPointerException at java.io.File.<init>(File.java:239) at org.apache.hadoop.mapred.JobHistory.initLogDir(JobHistory.java:531) at org.apache.hadoop.mapred.JobHistory.init(JobHistory.java:499) at org.apache.hadoop.mapred.JobTracker$2.run(JobTracker.java:2330) at org.apache.hadoop.mapred.JobTracker$2.run(JobTracker.java:2327) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:416) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1121) at org.apache.hadoop.mapred.JobTracker.<init>(JobTracker.java:2327) at org.apache.hadoop.mapred.JobTracker.<init>(JobTracker.java:2188) at org.apache.hadoop.mapred.JobTracker.<init>(JobTracker.java:2182) at org.apache.hadoop.mapred.JobTracker.startTracker(JobTracker.java:296) at org.apache.hadoop.mapred.MiniMRCluster$JobTrackerRunner$1.run(MiniMRCluster.java:114) at org.apache.hadoop.mapred.MiniMRCluster$JobTrackerRunner$1.run(MiniMRCluster.java:1) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:416) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1121) at org.apache.hadoop.mapred.MiniMRCluster$JobTrackerRunner.run(MiniMRCluster.java:112) at java.lang.Thread.run(Thread.java:679) 2012-08-10 13:53:05,895 INFO mapred.MiniMRCluster (MiniMRCluster.java:<init>(188)) - mapred.local.dir is /home/xeon/workspace/hadoop-1.0.3-tests/build/test/mapred/local/0_0 2012-08-10 13:53:10,923 INFO http.HttpServer (HttpServer.java:addGlobalFilter(411)) - Added global filtersafety (class=org.apache.hadoop.http.HttpServer$QuotingInputFilter) 2012-08-10 13:53:10,941 INFO mapred.TaskLogsTruncater (TaskLogsTruncater.java:<init>(72)) - Initializing logs' truncater with mapRetainSize=-1 and reduceRetainSize=-1 2012-08-10 13:53:10,947 INFO mapred.TaskTracker (TaskTracker.java:initialize(694)) - Starting tasktracker with owner as xeon 2012-08-10 13:53:10,948 INFO mapred.TaskTracker (TaskTracker.java:initialize(710)) - Good mapred local directories are: /home/xeon/workspace/hadoop-1.0.3-tests/build/test/mapred/local/0_0 2012-08-10 13:53:10,959 WARN util.NativeCodeLoader (NativeCodeLoader.java:<clinit>(52)) - Unable to load native-hadoop library for your platform... using builtin-java classes where applicable 2012-08-10 13:53:10,977 INFO ipc.Server (Server.java:run(328)) - Starting SocketReader 2012-08-10 13:53:10,979 INFO ipc.Server (Server.java:run(598)) - IPC Server Responder: starting 2012-08-10 13:53:10,979 INFO ipc.Server (Server.java:run(434)) - IPC Server listener on 58393: starting 2012-08-10 13:53:10,983 INFO ipc.Server (Server.java:run(1358)) - IPC Server handler 0 on 58393: starting 2012-08-10 13:53:10,984 INFO ipc.Server (Server.java:run(1358)) - IPC Server handler 1 on 58393: starting 2012-08-10 13:53:10,984 INFO ipc.Server (Server.java:run(1358)) - IPC Server handler 2 on 58393: starting 2012-08-10 13:53:10,987 INFO ipc.Server (Server.java:run(1358)) - IPC Server handler 3 on 58393: starting 2012-08-10 13:53:10,987 INFO mapred.TaskTracker (TaskTracker.java:initialize(794)) - TaskTracker up at: localhost.localdomain/127.0.0.1:58393 2012-08-10 13:53:10,988 INFO mapred.TaskTracker (TaskTracker.java:initialize(797)) - Starting tracker tracker_host0.foo.com: localhost.localdomain/127.0.0.1:58393 2012-08-10 13:53:12,050 INFO ipc.Client (Client.java:handleConnectionFailure(666)) - Retrying connect to server: localhost/127.0.0.1:0. Already tried 0 time(s). 2012-08-10 13:53:13,051 INFO ipc.Client (Client.java:handleConnectionFailure(666)) - Retrying connect to server: localhost/127.0.0.1:0. Already tried 1 time(s). 2012-08-10 13:53:14,053 INFO ipc.Client (Client.java:handleConnectionFailure(666)) - Retrying connect to server: localhost/127.0.0.1:0. Already tried 2 time(s).
How do I run Hadoop Junit tests properly? Thanks, * * * * -- Best regards,
