[
https://issues.apache.org/jira/browse/HADOOP-17531?focusedWorklogId=566404&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-566404
]
ASF GitHub Bot logged work on HADOOP-17531:
-------------------------------------------
Author: ASF GitHub Bot
Created on: 15/Mar/21 17:22
Start Date: 15/Mar/21 17:22
Worklog Time Spent: 10m
Work Description: ayushtkn commented on pull request #2732:
URL: https://github.com/apache/hadoop/pull/2732#issuecomment-799599534
Thanx @steveloughran for trying that out. I will figure out a way to run
that UT.
I found a doc:
http://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-common/filesystem/testing.html#Supporting_FileSystems_with_login_and_authentication_parameters
I will sort out the cred stuff and try following this doc, let me know if
this isn't the best or correct doc to follow.
I added a HDFS contract test as well and that fetched me a same exception as
S3A:
```
java.lang.IllegalArgumentException: Wrong FS:
file:/Users/ayushsaxena/code/hadoop-code/osCode/hadoop/hadoop-tools/hadoop-distcp/target/test-dir/TestHDFSContractDistCp/testDistCpWithIterator/local/dest,
expected: hdfs://localhost:58099
at org.apache.hadoop.fs.FileSystem.checkPath(FileSystem.java:806)
at
org.apache.hadoop.hdfs.DistributedFileSystem.getPathName(DistributedFileSystem.java:257)
at
org.apache.hadoop.hdfs.DistributedFileSystem$DirListingIterator.<init>(DistributedFileSystem.java:1272)
at
org.apache.hadoop.hdfs.DistributedFileSystem$DirListingIterator.<init>(DistributedFileSystem.java:1259)
at
org.apache.hadoop.hdfs.DistributedFileSystem$25.doCall(DistributedFileSystem.java:1204)
at
org.apache.hadoop.hdfs.DistributedFileSystem$25.doCall(DistributedFileSystem.java:1200)
at
org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
at
org.apache.hadoop.hdfs.DistributedFileSystem.listLocatedStatus(DistributedFileSystem.java:1218)
at
org.apache.hadoop.fs.FileSystem.listLocatedStatus(FileSystem.java:2161)
at org.apache.hadoop.fs.FileSystem$5.<init>(FileSystem.java:2287)
at org.apache.hadoop.fs.FileSystem.listFiles(FileSystem.java:2284)
at
org.apache.hadoop.tools.contract.AbstractContractDistCpTest.testDistCpWithIterator(AbstractContractDistCpTest.java:622)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at
org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at
org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
at org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:55)
at org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:55)
at
org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:298)
at
org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:292)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.lang.Thread.run(Thread.java:748)
```
I fixed it, So I suppose S3A should work, But the ABFS stuff I need to
check, I feel it doesn't have a filesystem check (`checkPath`), but I will
figure out. Thanx!!!
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Issue Time Tracking
-------------------
Worklog Id: (was: 566404)
Time Spent: 4h 20m (was: 4h 10m)
> DistCp: Reduce memory usage on copying huge directories
> -------------------------------------------------------
>
> Key: HADOOP-17531
> URL: https://issues.apache.org/jira/browse/HADOOP-17531
> Project: Hadoop Common
> Issue Type: Improvement
> Reporter: Ayush Saxena
> Assignee: Ayush Saxena
> Priority: Critical
> Labels: pull-request-available
> Attachments: MoveToStackIterator.patch, gc-NewD-512M-3.8ML.log
>
> Time Spent: 4h 20m
> Remaining Estimate: 0h
>
> Presently distCp, uses the producer-consumer kind of setup while building the
> listing, the input queue and output queue are both unbounded, thus the
> listStatus grows quite huge.
> Rel Code Part :
> https://github.com/apache/hadoop/blob/trunk/hadoop-tools/hadoop-distcp/src/main/java/org/apache/hadoop/tools/SimpleCopyListing.java#L635
> This goes on bredth-first traversal kind of stuff(uses queue instead of
> earlier stack), so if you have files at lower depth, it will like open up the
> entire tree and the start processing....
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