次のサイトのmanulを使用して、hadoopを単一ノードとしてインストールおよび構成しました。
wordcountの例をコンパイルして実行しましたが、時間がかかり、生成されますShuffle Error: Exceeded MAX_FAILED_UNIQUE_FETCHES; bailing-out.
hduser@aptunix0043:/usr/local/hadoop/src$ hadoop jar WordCount.jar org/apache/hadoop/examples/WordCount input ot
****hdfs://localhost:54310/user/hduser/input
12/07/03 02:52:35 INFO input.FileInputFormat: Total input paths to process : 1
12/07/03 02:52:36 INFO mapred.JobClient: Running job: job_201207030248_0002
12/07/03 02:52:37 INFO mapred.JobClient: map 0% reduce 0%
12/07/03 02:52:52 INFO mapred.JobClient: map 100% reduce 0%
12/07/03 03:21:26 INFO mapred.JobClient: Task Id :attempt_201207030248_0002_r_000000_0, Status : FAILED
Shuffle Error: Exceeded MAX_FAILED_UNIQUE_FETCHES; bailing-out.
12/07/03 03:21:47 WARN mapred.JobClient: Error reading task outputConnection timed out
12/07/03 03:22:08 WARN mapred.JobClient: Error reading task outputConnection timed out
/user/hduser/input/*12/07/03 03:50:01 INFO mapred.JobClient: Task Id : attempt_201207030248_0002_r_000000_1, Status : FAILED
Shuffle Error: Exceeded MAX_FAILED_UNIQUE_FETCHES; bailing-out.
12/07/03 03:50:22 WARN mapred.JobClient: Error reading task outputConnection timed out
12/07/03 03:50:43 WARN mapred.JobClient: Error reading task outputConnection timed out
12/07/03 04:18:35 INFO mapred.JobClient: Task Id : attempt_201207030248_0002_r_000000_2, Status : FAILED
Shuffle Error: Exceeded MAX_FAILED_UNIQUE_FETCHES; bailing-out.
12/07/03 04:18:56 WARN mapred.JobClient: Error reading task outputConnection timed out
12/07/03 04:19:17 WARN mapred.JobClient: Error reading task outputConnection timed out
12/07/03 04:47:15 INFO mapred.JobClient: Job complete: job_201207030248_0002
12/07/03 04:47:15 INFO mapred.JobClient: Counters: 23
12/07/03 04:47:15 INFO mapred.JobClient: Job Counters
12/07/03 04:47:15 INFO mapred.JobClient: Launched reduce tasks=4
12/07/03 04:47:15 INFO mapred.JobClient: SLOTS_MILLIS_MAPS=12948
12/07/03 04:47:15 INFO mapred.JobClient: Total time spent by all reduces waiting after reserving slots (ms)=0
12/07/03 04:47:15 INFO mapred.JobClient: Total time spent by all maps waiting after reserving slots (ms)=0
12/07/03 04:47:15 INFO mapred.JobClient: Launched map tasks=1
12/07/03 04:47:15 INFO mapred.JobClient: Data-local map tasks=1
12/07/03 04:47:15 INFO mapred.JobClient: Failed reduce tasks=1
12/07/03 04:47:15 INFO mapred.JobClient: SLOTS_MILLIS_REDUCES=16469
12/07/03 04:47:15 INFO mapred.JobClient: FileSystemCounters
12/07/03 04:47:15 INFO mapred.JobClient: HDFS_BYTES_READ=661744
12/07/03 04:47:15 INFO mapred.JobClient: FILE_BYTES_WRITTEN=288616
12/07/03 04:47:15 INFO mapred.JobClient: File Input Format Counters
12/07/03 04:47:15 INFO mapred.JobClient: Bytes Read=661630
12/07/03 04:47:15 INFO mapred.JobClient: Map-Reduce Framework
12/07/03 04:47:15 INFO mapred.JobClient: Map output materialized bytes=267085
12/07/03 04:47:15 INFO mapred.JobClient: Combine output records=18040
12/07/03 04:47:15 INFO mapred.JobClient: Map input records=12761
12/07/03 04:47:15 INFO mapred.JobClient: Physical memory (bytes) snapshot=183209984
12/07/03 04:47:15 INFO mapred.JobClient: Spilled Records=18040
12/07/03 04:47:15 INFO mapred.JobClient: Map output bytes=1086716
12/07/03 04:47:15 INFO mapred.JobClient: CPU time spent (ms)=1940
12/07/03 04:47:15 INFO mapred.JobClient: Total committed heap usage (bytes)=162856960
12/07/03 04:47:15 INFO mapred.JobClient: Virtual memory (bytes) snapshot=393482240
12/07/03 04:47:15 INFO mapred.JobClient: Combine input records=109844
12/07/03 04:47:15 INFO mapred.JobClient: Map output records=109844
12/07/03 04:47:15 INFO mapred.JobClient: SPLIT_RAW_BYTES=114
どんな手掛かり?