On Fri, Feb 3, 2012 at 4:56 PM, hadoop hive <hadooph...@gmail.com> wrote:
> hey folks, > > i m getting this error while running mapreduce and these comes up in > reduce phase.. > > > 2012-02-03 16:41:19,780 WARN org.apache.hadoop.mapred.ReduceTask: > attempt_201201271626_5282_r_000000_0 copy failed: > attempt_201201271626_5282_m_000007_2 from hadoopdata3 > 2012-02-03 16:41:19,954 WARN org.apache.hadoop.mapred.ReduceTask: > java.net.ConnectException: Connection refused > at sun.reflect.GeneratedConstructorAccessor8.newInstance(Unknown Source) > at > sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) > at java.lang.reflect.Constructor.newInstance(Constructor.java:513) > at > sun.net.www.protocol.http.HttpURLConnection$6.run(HttpURLConnection.java:1345) > at java.security.AccessController.doPrivileged(Native Method) > at > sun.net.www.protocol.http.HttpURLConnection.getChainedException(HttpURLConnection.java:1339) > at > sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:993) > at > org.apache.hadoop.mapred.ReduceTask$ReduceCopier$MapOutputCopier.getInputStream(ReduceTask.java:1447) > at > org.apache.hadoop.mapred.ReduceTask$ReduceCopier$MapOutputCopier.getMapOutput(ReduceTask.java:1349) > at > org.apache.hadoop.mapred.ReduceTask$ReduceCopier$MapOutputCopier.copyOutput(ReduceTask.java:1261) > at > org.apache.hadoop.mapred.ReduceTask$ReduceCopier$MapOutputCopier.run(ReduceTask.java:1195) > Caused by: java.net.ConnectException: Connection refused > at java.net.PlainSocketImpl.socketConnect(Native Method) > at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333) > at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195) > at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182) > at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366) > at java.net.Socket.connect(Socket.java:519) > at sun.net.NetworkClient.doConnect(NetworkClient.java:158) > 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) > ... 4 more > > 2012-02-03 16:41:19,995 INFO org.apache.hadoop.mapred.ReduceTask: Task > attempt_201201271626_5282_r_000000_0: Failed fetch #4 from > attempt_201201271626_5282_m_000007_2 > 2012-02-03 16:41:19,995 INFO org.apache.hadoop.mapred.ReduceTask: Failed to > fetch map-output from attempt_201201271626_5282_m_000007_2 even after > MAX_FETCH_RETRIES_PER_MAP retries... reporting to the JobTracker > 2012-02-03 16:41:19,995 WARN org.apache.hadoop.mapred.ReduceTask: > attempt_201201271626_5282_r_000000_0 adding host hadoopdata3 to penalty box, > next contact in 150 seconds > 2012-02-03 16:41:19,995 INFO org.apache.hadoop.mapred.ReduceTask: > attempt_201201271626_5282_r_000000_0: Got 1 map-outputs from previous failures > 2012-02-03 16:42:10,015 INFO org.apache.hadoop.mapred.ReduceTask: > attempt_201201271626_5282_r_000000_0 Need another 1 map output(s) where 0 is > already in progress > 2012-02-03 16:42:10,015 INFO org.apache.hadoop.mapred.ReduceTask: > attempt_201201271626_5282_r_000000_0 Scheduled 0 outputs (1 slow hosts and0 > dup hosts) > 2012-02-03 16:42:10,015 INFO org.apache.hadoop.mapred.ReduceTask: > Penalized(slow) Hosts: > 2012-02-03 16:42:10,015 INFO org.apache.hadoop.mapred.ReduceTask: hadoopdata3 > Will be considered after: 99 seconds. > 2012-02-03 16:43:10,050 INFO org.apache.hadoop.mapred.ReduceTask: > attempt_201201271626_5282_r_000000_0 Need another 1 map output(s) where 0 is > already in progress > 2012-02-03 16:43:10,050 INFO org.apache.hadoop.mapred.ReduceTask: > attempt_201201271626_5282_r_000000_0 Scheduled 0 outputs (1 slow hosts and0 > dup hosts) > 2012-02-03 16:43:10,050 INFO org.apache.hadoop.mapred.ReduceTask: > Penalized(slow) Hosts: > 2012-02-03 16:43:10,050 INFO org.apache.hadoop.mapred.ReduceTask: hadoopdata3 > Will be considered after: 39 seconds. > >
