HI Team,
we are using 1 namenode with 11 Datanode each of (16GB ram and 1.4 tb hdd) i m getting this error while running any query , simple its not working when we use any map tasks. and we are using hive on hadoop. Total MapReduce jobs = 1 Launching Job 1 out of 1 Number of reduce tasks not specified. Estimated from input data size: 120 In order to change the average load for a reducer (in bytes): set hive.exec.reducers.bytes.per.reducer=<number> In order to limit the maximum number of reducers: set hive.exec.reducers.max=<number> In order to set a constant number of reducers: set mapred.reduce.tasks=<number> Starting Job = job_201107191711_0013, Tracking URL = http://hadoopname:50030/jobdetails.jsp?jobid=job_201107191711_0013 Kill Command = /home/hadoop/hadoop/bin/../bin/hadoop job -Dmapred.job.tracker=10.0.3.28:9001 -kill job_201107191711_0013 2011-07-19 18:06:34,973 Stage-1 map = 100%, reduce = 100% Ended Job = job_201107191711_0013 with errors java.lang.RuntimeException: Error while reading from task log url at org.apache.hadoop.hive.ql.exec.errors.TaskLogProcessor.getErrors(TaskLogProcessor.java:130) at org.apache.hadoop.hive.ql.exec.ExecDriver.showJobFailDebugInfo(ExecDriver.java:889) at org.apache.hadoop.hive.ql.exec.ExecDriver.execute(ExecDriver.java:680) at org.apache.hadoop.hive.ql.exec.MapRedTask.execute(MapRedTask.java:123) at org.apache.hadoop.hive.ql.exec.Task.executeTask(Task.java:130) at org.apache.hadoop.hive.ql.exec.TaskRunner.runSequential(TaskRunner.java:57) at org.apache.hadoop.hive.ql.exec.TaskRunner.run(TaskRunner.java:47) Caused by: java.net.UnknownHostException: hadoopdata3 at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:177) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366) at java.net.Socket.connect(Socket.java:519) at java.net.Socket.connect(Socket.java:469) at sun.net.NetworkClient.doConnect(NetworkClient.java:163) at sun.net.www.http.HttpClient.openServer(HttpClient.java:394) at sun.net.www.http.HttpClient.openServer(HttpClient.java:529) at sun.net.www.http.HttpClient.<init>(HttpClient.java:233) at sun.net.www.http.HttpClient.New(HttpClient.java:306) at sun.net.www.http.HttpClient.New(HttpClient.java:323) at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:837) at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:778) at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:703) at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1026) at java.net.URL.openStream(URL.java:1009) at org.apache.hadoop.hive.ql.exec.errors.TaskLogProcessor.getErrors(TaskLogProcessor.java:120) ... 6 more Ended Job = job_201107191711_0013 with exception 'java.lang.RuntimeException(Error while reading from task log url)' FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.MapRedTask -- With Regards Vikas Srivastava DWH & Analytics Team Mob:+91 9560885900 One97 | Let's get talking !
