[HADOOP-8775] MR2 distcp permits non-positive value to -bandwidth option which causes job never to complete

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.0-alpha
• Fix Version/s: 2.0.2-alpha, 0.23.5
• Target Version/s: 2.0.2-alpha
• Assignee: Sandy Ryza
• Reporter: Sandy Ryza
• Created: 06/Sep/12 19:38
• Updated: 11/Oct/12 17:45
• Resolved: 07/Sep/12 18:42

Description

The likelihood that someone would want to enter a non-positive value for -bandwidth seems really low. However, the job would never complete if a non-positive value was specified. It'd just get stuck at map 100%. Luckily, a positive value would always lead to the job completing.

bash-4.1$ hadoop distcp -bandwidth 0 hdfs://c1204.hal.cloudera.com:17020/user/hdfs/in-dir hdfs://c1204.hal.cloudera.com:17020/user/hdfs/in-dir58
hadoop distcp -bandwidth 0 hdfs://c1204.hal.cloudera.com:17020/user/hdfs/in-dir hdfs://c1204.hal.cloudera.com:17020/user/hdfs/in-dir58
12/05/23 15:53:01 INFO tools.DistCp: Input Options: DistCpOptions{atomicCommit=false, syncFolder=false, deleteMissing=false, ignoreFailures=false, maxMaps=20, sslConfigurationFile='null', copyStrategy='uniformsiz\
e', sourceFileListing=null, sourcePaths=[hdfs://c1204.hal.cloudera.com:17020/user/hdfs/in-dir], targetPath=hdfs://c1204.hal.cloudera.com:17020/user/hdfs/in-dir58}
12/05/23 15:53:02 WARN conf.Configuration: io.sort.mb is deprecated. Instead, use mapreduce.task.io.sort.mb
12/05/23 15:53:02 WARN conf.Configuration: io.sort.factor is deprecated. Instead, use mapreduce.task.io.sort.factor
12/05/23 15:53:02 INFO util.NativeCodeLoader: Loaded the native-hadoop library
12/05/23 15:53:03 INFO mapreduce.JobSubmitter: number of splits:3
12/05/23 15:53:04 WARN conf.Configuration: mapred.jar is deprecated. Instead, use mapreduce.job.jar
12/05/23 15:53:04 WARN conf.Configuration: mapred.map.tasks.speculative.execution is deprecated. Instead, use mapreduce.map.speculative
12/05/23 15:53:04 WARN conf.Configuration: mapred.reduce.tasks is deprecated. Instead, use mapreduce.job.reduces
12/05/23 15:53:04 WARN conf.Configuration: mapred.mapoutput.value.class is deprecated. Instead, use mapreduce.map.output.value.class
12/05/23 15:53:04 WARN conf.Configuration: mapreduce.map.class is deprecated. Instead, use mapreduce.job.map.class
12/05/23 15:53:04 WARN conf.Configuration: mapred.job.name is deprecated. Instead, use mapreduce.job.name
12/05/23 15:53:04 WARN conf.Configuration: mapreduce.inputformat.class is deprecated. Instead, use mapreduce.job.inputformat.class
12/05/23 15:53:04 WARN conf.Configuration: mapred.output.dir is deprecated. Instead, use mapreduce.output.fileoutputformat.outputdir
12/05/23 15:53:04 WARN conf.Configuration: mapreduce.outputformat.class is deprecated. Instead, use mapreduce.job.outputformat.class
12/05/23 15:53:04 WARN conf.Configuration: mapred.map.tasks is deprecated. Instead, use mapreduce.job.maps
12/05/23 15:53:04 WARN conf.Configuration: mapred.mapoutput.key.class is deprecated. Instead, use mapreduce.map.output.key.class
12/05/23 15:53:04 WARN conf.Configuration: mapred.working.dir is deprecated. Instead, use mapreduce.job.working.dir
12/05/23 15:53:04 INFO mapred.ResourceMgrDelegate: Submitted application application_1337808305464_0014 to ResourceManager at c1204.hal.cloudera.com/172.29.98.195:8040
12/05/23 15:53:04 INFO mapreduce.Job: The url to track the job: http://auto0:8088/proxy/application_1337808305464_0014/
12/05/23 15:53:04 INFO tools.DistCp: DistCp job-id: job_1337808305464_0014
12/05/23 15:53:04 INFO mapreduce.Job: Running job: job_1337808305464_0014
12/05/23 15:53:09 INFO mapreduce.Job: Job job_1337808305464_0014 running in uber mode : false
12/05/23 15:53:09 INFO mapreduce.Job:  map 0% reduce 0%
12/05/23 15:53:14 INFO mapreduce.Job:  map 33% reduce 0%
12/05/23 15:53:19 INFO mapreduce.Job:  map 100% reduce 0%