[
https://issues.apache.org/jira/browse/MAPREDUCE-5528?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Albert Chu updated MAPREDUCE-5528:
----------------------------------
Description:
I was trying to run TeraSort against a parallel networked file system, setting
things up via the 'file://" scheme. I always got the following error when
running terasort:
{noformat}
13/09/23 11:15:12 INFO mapreduce.Job: Task Id :
attempt_1379960046506_0001_m_000080_1, Status : FAILED
Error: java.lang.IllegalArgumentException: can't read paritions file
at
org.apache.hadoop.examples.terasort.TeraSort$TotalOrderPartitioner.setConf(TeraSort.java:254)
at
org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:73)
at
org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:133)
at
org.apache.hadoop.mapred.MapTask$NewOutputCollector.<init>(MapTask.java:678)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:747)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:340)
at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:171)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:396)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1499)
at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:166)
Caused by: java.io.FileNotFoundException: File _partition.lst does not exist
at org.apache.hadoop.fs.Stat.parseExecResult(Stat.java:124)
at org.apache.hadoop.util.Shell.runCommand(Shell.java:486)
at org.apache.hadoop.util.Shell.run(Shell.java:417)
at org.apache.hadoop.fs.Stat.getFileStatus(Stat.java:74)
at
org.apache.hadoop.fs.RawLocalFileSystem.getNativeFileLinkStatus(RawLocalFileSystem.java:808)
at
org.apache.hadoop.fs.RawLocalFileSystem.getFileLinkStatusInternal(RawLocalFileSystem.java:740)
at
org.apache.hadoop.fs.RawLocalFileSystem.getFileStatus(RawLocalFileSystem.java:525)
at
org.apache.hadoop.fs.FilterFileSystem.getFileStatus(FilterFileSystem.java:398)
at
org.apache.hadoop.fs.ChecksumFileSystem$ChecksumFSInputChecker.<init>(ChecksumFileSystem.java:137)
at
org.apache.hadoop.fs.ChecksumFileSystem.open(ChecksumFileSystem.java:339)
at org.apache.hadoop.fs.FileSystem.open(FileSystem.java:763)
at
org.apache.hadoop.examples.terasort.TeraSort$TotalOrderPartitioner.readPartitions(TeraSort.java:161)
at
org.apache.hadoop.examples.terasort.TeraSort$TotalOrderPartitioner.setConf(TeraSort.java:246)
... 10 more
{noformat}
After digging into TeraSort, I noticed that the partitions file was created in
the output directory, then added into the distributed cache
{noformat}
Path outputDir = new Path(args[1]);
...
Path partitionFile = new Path(outputDir, TeraInputFormat.PARTITION_FILENAME);
...
job.addCacheFile(partitionUri);
{noformat}
but the partitions file doesn't seem to be read back from the output directory
or distributed cache:
{noformat}
FileSystem fs = FileSystem.getLocal(conf);
...
Path partFile = new Path(TeraInputFormat.PARTITION_FILENAME);
splitPoints = readPartitions(fs, partFile, conf);
{noformat}
It seems the file is being read from whatever the working directory is for the
filesystem returned from FileSystem.getLocal(conf).
Under HDFS this code works, the working directory seems to be the distributed
cache (I guess by default??).
But when I set things up with the networked file system and 'file://' scheme,
the working directory was the directory I was running my Hadoop binaries out of.
The attached patch fixed things for me. It grabs the partition file from the
distributed cache all of the time, instead of trusting things underneath to
work out. It seems to be the right thing to do???
Apologies, I was unable to get this to reproduce under the TeraSort example
tests, such as TestTeraSort.java, so no test added. Not sure what the subtle
difference is in the setup. I tested under both HDFS & 'file' scheme and the
patch worked under both.
was:
I was trying to run TeraSort against a parallel networked file system,
setting things up via the 'file://" scheme. I always got the
following error when running terasort:
{noformat}
13/09/23 11:15:12 INFO mapreduce.Job: Task Id :
attempt_1379960046506_0001_m_000080_1, Status : FAILED
Error: java.lang.IllegalArgumentException: can't read paritions file
at
org.apache.hadoop.examples.terasort.TeraSort$TotalOrderPartitioner.setConf(TeraSort.java:254)
at
org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:73)
at
org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:133)
at
org.apache.hadoop.mapred.MapTask$NewOutputCollector.<init>(MapTask.java:678)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:747)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:340)
at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:171)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:396)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1499)
at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:166)
Caused by: java.io.FileNotFoundException: File _partition.lst does not exist
at org.apache.hadoop.fs.Stat.parseExecResult(Stat.java:124)
at org.apache.hadoop.util.Shell.runCommand(Shell.java:486)
at org.apache.hadoop.util.Shell.run(Shell.java:417)
at org.apache.hadoop.fs.Stat.getFileStatus(Stat.java:74)
at
org.apache.hadoop.fs.RawLocalFileSystem.getNativeFileLinkStatus(RawLocalFileSystem.java:808)
at
org.apache.hadoop.fs.RawLocalFileSystem.getFileLinkStatusInternal(RawLocalFileSystem.java:740)
at
org.apache.hadoop.fs.RawLocalFileSystem.getFileStatus(RawLocalFileSystem.java:525)
at
org.apache.hadoop.fs.FilterFileSystem.getFileStatus(FilterFileSystem.java:398)
at
org.apache.hadoop.fs.ChecksumFileSystem$ChecksumFSInputChecker.<init>(ChecksumFileSystem.java:137)
at
org.apache.hadoop.fs.ChecksumFileSystem.open(ChecksumFileSystem.java:339)
at org.apache.hadoop.fs.FileSystem.open(FileSystem.java:763)
at
org.apache.hadoop.examples.terasort.TeraSort$TotalOrderPartitioner.readPartitions(TeraSort.java:161)
at
org.apache.hadoop.examples.terasort.TeraSort$TotalOrderPartitioner.setConf(TeraSort.java:246)
... 10 more
{noformat}
After digging into TeraSort, I noticed that the partitions file was
created in the output directory, then added into the distributed cache
{noformat}
Path outputDir = new Path(args[1]);
...
Path partitionFile = new Path(outputDir, TeraInputFormat.PARTITION_FILENAME);
...
job.addCacheFile(partitionUri);
{noformat}
but the partitions file doesn't seem to be read back from the output
directory or distributed cache:
{noformat}
FileSystem fs = FileSystem.getLocal(conf);
...
Path partFile = new Path(TeraInputFormat.PARTITION_FILENAME);
splitPoints = readPartitions(fs, partFile, conf);
{noformat}
It seems the file is being read from whatever the working directory is
for the filesystem returned from FileSystem.getLocal(conf).
Under HDFS this code works, the working directory seems to be the
distributed cache (I guess by default??).
But when I set things up with the networked file system and 'file://'
scheme, the working directory was the directory I was running my
Hadoop binaries out of.
The attached patch fixed things for me. It grabs the partition file from the
distributed cache all of the time, instead of trusting things underneath to
work out. It seems to be the right thing to do???
Apologies, I was unable to get this to reproduce under the TeraSort
example tests, such as TestTeraSort.java, so no test added. Not sure what the
subtle difference is in the setup. I tested under both HDFS & 'file' scheme
and the patch worked under both.
> TeraSort fails with "can't read paritions file" - does not read partition
> file from distributed cache
> -----------------------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-5528
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5528
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: examples
> Affects Versions: 3.0.0
> Reporter: Albert Chu
> Priority: Minor
> Attachments: MAPREDUCE-5528.patch
>
>
> I was trying to run TeraSort against a parallel networked file system,
> setting things up via the 'file://" scheme. I always got the following error
> when running terasort:
> {noformat}
> 13/09/23 11:15:12 INFO mapreduce.Job: Task Id :
> attempt_1379960046506_0001_m_000080_1, Status : FAILED
> Error: java.lang.IllegalArgumentException: can't read paritions file
> at
> org.apache.hadoop.examples.terasort.TeraSort$TotalOrderPartitioner.setConf(TeraSort.java:254)
> at
> org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:73)
> at
> org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:133)
> at
> org.apache.hadoop.mapred.MapTask$NewOutputCollector.<init>(MapTask.java:678)
> at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:747)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:340)
> at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:171)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:396)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1499)
> at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:166)
> Caused by: java.io.FileNotFoundException: File _partition.lst does not exist
> at org.apache.hadoop.fs.Stat.parseExecResult(Stat.java:124)
> at org.apache.hadoop.util.Shell.runCommand(Shell.java:486)
> at org.apache.hadoop.util.Shell.run(Shell.java:417)
> at org.apache.hadoop.fs.Stat.getFileStatus(Stat.java:74)
> at
> org.apache.hadoop.fs.RawLocalFileSystem.getNativeFileLinkStatus(RawLocalFileSystem.java:808)
> at
> org.apache.hadoop.fs.RawLocalFileSystem.getFileLinkStatusInternal(RawLocalFileSystem.java:740)
> at
> org.apache.hadoop.fs.RawLocalFileSystem.getFileStatus(RawLocalFileSystem.java:525)
> at
> org.apache.hadoop.fs.FilterFileSystem.getFileStatus(FilterFileSystem.java:398)
> at
> org.apache.hadoop.fs.ChecksumFileSystem$ChecksumFSInputChecker.<init>(ChecksumFileSystem.java:137)
> at
> org.apache.hadoop.fs.ChecksumFileSystem.open(ChecksumFileSystem.java:339)
> at org.apache.hadoop.fs.FileSystem.open(FileSystem.java:763)
> at
> org.apache.hadoop.examples.terasort.TeraSort$TotalOrderPartitioner.readPartitions(TeraSort.java:161)
> at
> org.apache.hadoop.examples.terasort.TeraSort$TotalOrderPartitioner.setConf(TeraSort.java:246)
> ... 10 more
> {noformat}
> After digging into TeraSort, I noticed that the partitions file was created
> in the output directory, then added into the distributed cache
> {noformat}
> Path outputDir = new Path(args[1]);
> ...
> Path partitionFile = new Path(outputDir, TeraInputFormat.PARTITION_FILENAME);
> ...
> job.addCacheFile(partitionUri);
> {noformat}
> but the partitions file doesn't seem to be read back from the output
> directory or distributed cache:
> {noformat}
> FileSystem fs = FileSystem.getLocal(conf);
> ...
> Path partFile = new Path(TeraInputFormat.PARTITION_FILENAME);
> splitPoints = readPartitions(fs, partFile, conf);
> {noformat}
> It seems the file is being read from whatever the working directory is for
> the filesystem returned from FileSystem.getLocal(conf).
> Under HDFS this code works, the working directory seems to be the distributed
> cache (I guess by default??).
> But when I set things up with the networked file system and 'file://' scheme,
> the working directory was the directory I was running my Hadoop binaries out
> of.
> The attached patch fixed things for me. It grabs the partition file from the
> distributed cache all of the time, instead of trusting things underneath to
> work out. It seems to be the right thing to do???
> Apologies, I was unable to get this to reproduce under the TeraSort example
> tests, such as TestTeraSort.java, so no test added. Not sure what the subtle
> difference is in the setup. I tested under both HDFS & 'file' scheme and the
> patch worked under both.
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