/etc/hosts #127.0.0.1 localhost.localdomain localhost ::1 localhost6.localdomain6 localhost6
should localhost.localdomain point to 127.0.0.1? On Wed, Apr 2, 2014 at 3:55 PM, Gordon Wang <[email protected]> wrote: > You may want to check the /etc/hosts. The configuration of localhost may not > right. > Make sure localhost.localdomain can be resolved. > > > On Wed, Apr 2, 2014 at 2:15 PM, Li Li <[email protected]> wrote: >> >> the reducer hangs and the log is: >> >> 2014-04-02 14:03:57,235 WARN org.apache.hadoop.mapred.ReduceTask: >> attempt_201402271518_0260_r_000000_0 copy failed: >> attempt_201402271518_0260_m_000001_1 from localhost.localdomain >> 2014-04-02 14:03:57,235 WARN org.apache.hadoop.mapred.ReduceTask: >> java.net.UnknownHostException: localhost.localdomain >> at >> java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:178) >> at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:391) >> at java.net.Socket.connect(Socket.java:579) >> at sun.net.NetworkClient.doConnect(NetworkClient.java:175) >> at sun.net.www.http.HttpClient.openServer(HttpClient.java:388) >> at sun.net.www.http.HttpClient.openServer(HttpClient.java:483) >> at sun.net.www.http.HttpClient.<init>(HttpClient.java:213) >> at sun.net.www.http.HttpClient.New(HttpClient.java:300) >> at sun.net.www.http.HttpClient.New(HttpClient.java:316) >> at >> sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:992) >> at >> sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:928) >> at >> sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:846) >> at >> org.apache.hadoop.mapred.ReduceTask$ReduceCopier$MapOutputCopier.getInputStream(ReduceTask.java:1636) >> at >> org.apache.hadoop.mapred.ReduceTask$ReduceCopier$MapOutputCopier.setupSecureConnection(ReduceTask.java:1593) >> at >> org.apache.hadoop.mapred.ReduceTask$ReduceCopier$MapOutputCopier.getMapOutput(ReduceTask.java:1493) >> at >> org.apache.hadoop.mapred.ReduceTask$ReduceCopier$MapOutputCopier.copyOutput(ReduceTask.java:1401) >> at >> org.apache.hadoop.mapred.ReduceTask$ReduceCopier$MapOutputCopier.run(ReduceTask.java:1333) >> >> 2014-04-02 14:03:57,236 INFO org.apache.hadoop.mapred.ReduceTask: Task >> attempt_201402271518_0260_r_000000_0: Failed fetch #16 from >> attempt_201402271518_0260_m_000001_1 >> 2014-04-02 14:03:57,236 WARN org.apache.hadoop.mapred.ReduceTask: >> attempt_201402271518_0260_r_000000_0 adding host localhost.localdomain >> to penalty box, next contact in 665 seconds >> 2014-04-02 14:03:57,236 INFO org.apache.hadoop.mapred.ReduceTask: >> attempt_201402271518_0260_r_000000_0: Got 1 map-outputs from previous >> failures >> 2014-04-02 14:04:17,244 INFO org.apache.hadoop.mapred.ReduceTask: >> attempt_201402271518_0260_r_000000_0 Need another 1 map output(s) >> where 0 is already in progress >> 2014-04-02 14:04:17,244 INFO org.apache.hadoop.mapred.ReduceTask: >> attempt_201402271518_0260_r_000000_0 Scheduled 0 outputs (1 slow hosts >> and0 dup hosts) >> 2014-04-02 14:04:17,244 INFO org.apache.hadoop.mapred.ReduceTask: >> Penalized(slow) Hosts: >> 2014-04-02 14:04:17,244 INFO org.apache.hadoop.mapred.ReduceTask: >> localhost.localdomain Will be considered after: 645 seconds. >> 2014-04-02 14:05:17,269 INFO org.apache.hadoop.mapred.ReduceTask: >> attempt_201402271518_0260_r_000000_0 Need another 1 map output(s) >> where 0 is already in progress >> 2014-04-02 14:05:17,269 INFO org.apache.hadoop.mapred.ReduceTask: >> attempt_201402271518_0260_r_000000_0 Scheduled 0 outputs (1 slow hosts >> and0 dup hosts) >> 2014-04-02 14:05:17,269 INFO org.apache.hadoop.mapred.ReduceTask: >> Penalized(slow) Hosts: >> 2014-04-02 14:05:17,269 INFO org.apache.hadoop.mapred.ReduceTask: >> localhost.localdomain Will be considered after: 585 seconds. >> 2014-04-02 14:06:17,294 INFO org.apache.hadoop.mapred.ReduceTask: >> attempt_201402271518_0260_r_000000_0 Need another 1 map output(s) >> where 0 is already in progress >> 2014-04-02 14:06:17,295 INFO org.apache.hadoop.mapred.ReduceTask: >> attempt_201402271518_0260_r_000000_0 Scheduled 0 outputs (1 slow hosts >> and0 dup hosts) >> 2014-04-02 14:06:17,295 INFO org.apache.hadoop.mapred.ReduceTask: >> Penalized(slow) Hosts: > > > > > -- > Regards > Gordon Wang
