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[aajisaka] HDFS-9640. Remove hsftp from DistCp in trunk. Contributed by Wei-Chiu

[aajisaka] HADOOP-12873. Remove MRv1 terms from HttpAuthentication.md. 
Contributed

[aajisaka] Revert "MAPREDUCE-6543. Migrate MR client test cases part 2. 
Contributed

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Build failed in Jenkins: Hadoop-common-trunk-Java8 #1251

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[waltersu4549] HDFS-10182. Hedged read might overwrite user's buf. Contributed 
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[jira] [Resolved] (HADOOP-12505) ShellBasedUnixGroupMapping should support group names with space

[Wei-Chiu Chuang (JIRA)]

 [ 
https://issues.apache.org/jira/browse/HADOOP-12505?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Wei-Chiu Chuang resolved HADOOP-12505.
--
Resolution: Won't Fix

> ShellBasedUnixGroupMapping should support group names with space
> 
>
> Key: HADOOP-12505
> URL: https://issues.apache.org/jira/browse/HADOOP-12505
> Project: Hadoop Common
>  Issue Type: Bug
>Reporter: Wei-Chiu Chuang
>Assignee: Wei-Chiu Chuang
>
> In a typical configuration, group name is obtained from AD through SSSD/LDAP. 
> AD permits group names with space (e.g. "Domain Users").
> Unfortunately, the present implementation of ShellBasedUnixGroupMapping 
> parses the output of shell command "id -Gn", and assumes group names are 
> separated by space.
> This could be achieved by using a combination of shell scripts, for example,
> bash -c 'id -G weichiu | tr " " "\n" | xargs -I % getent group "%" | cut 
> -d":" -f1'
> But I am still looking for a more compact form, and potentially more 
> efficient one.



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[jianhe] Missing file for YARN-4117.

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[GitHub] hadoop pull request: HADOOP-12916

[arp7]

Github user arp7 commented on a diff in the pull request:

https://github.com/apache/hadoop/pull/86#discussion_r57606373
  
--- Diff: 
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/conf/Configuration.java
 ---
@@ -1636,6 +1640,15 @@ public long getTimeDuration(String name, long 
defaultValue, TimeUnit unit) {
 return unit.convert(Long.parseLong(vStr), vUnit.unit());
   }
 
+  public long[] getTimeDurations(String name, TimeUnit unit) {
--- End diff --

Consider returning a List.


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[GitHub] hadoop pull request: HADOOP-12916

[arp7]

Github user arp7 commented on a diff in the pull request:

https://github.com/apache/hadoop/pull/86#discussion_r57606818
  
--- Diff: 
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/CallQueueManager.java
 ---
@@ -49,25 +57,68 @@
   private final AtomicReference> putRef;
   private final AtomicReference> takeRef;
 
+  private RpcScheduler scheduler;
+
   public CallQueueManager(Class> backingClass,
+  Class schedulerClass,
   boolean clientBackOffEnabled, int maxQueueSize, String namespace,
   Configuration conf) {
+int priorityLevels = parseNumLevels(namespace, conf);
+this.scheduler = createScheduler(schedulerClass, priorityLevels,
+namespace, conf);
 BlockingQueue bq = createCallQueueInstance(backingClass,
-  maxQueueSize, namespace, conf);
+priorityLevels, maxQueueSize, namespace, conf);
 this.clientBackOffEnabled = clientBackOffEnabled;
 this.putRef = new AtomicReference>(bq);
 this.takeRef = new AtomicReference>(bq);
 LOG.info("Using callQueue " + backingClass);
   }
 
+  private static  T createScheduler(
+  Class theClass, int priorityLevels, String ns, Configuration 
conf) {
+// Used for custom, configurable scheduler
+try {
+  Constructor ctor = theClass.getDeclaredConstructor(int.class,
+  String.class, Configuration.class);
+  return ctor.newInstance(priorityLevels, ns, conf);
+} catch (RuntimeException e) {
--- End diff --

See HDFS-9478 which is fixing exception handling when constructing 
callqueue instances. We could use a similar fix for createScheduler.


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[GitHub] hadoop pull request: HADOOP-12916

[xiaoyuyao]

Github user xiaoyuyao commented on a diff in the pull request:

https://github.com/apache/hadoop/pull/86#discussion_r57619429
  
--- Diff: 
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/conf/Configuration.java
 ---
@@ -1636,6 +1640,15 @@ public long getTimeDuration(String name, long 
defaultValue, TimeUnit unit) {
 return unit.convert(Long.parseLong(vStr), vUnit.unit());
   }
 
+  public long[] getTimeDurations(String name, TimeUnit unit) {
--- End diff --

Good point. I will address that in the next patch.


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[jira] [Created] (HADOOP-12968) Make TestIPC.TestServer implement AutoCloseable

[Xiaobing Zhou (JIRA)]

Xiaobing Zhou created HADOOP-12968:
--

 Summary: Make TestIPC.TestServer implement AutoCloseable
 Key: HADOOP-12968
 URL: https://issues.apache.org/jira/browse/HADOOP-12968
 Project: Hadoop Common
  Issue Type: Bug
Reporter: Xiaobing Zhou






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[jira] [Created] (HADOOP-12969) Mark IPC.Client and IPC.Server as @Public, @Evolving

[Xiaobing Zhou (JIRA)]

Xiaobing Zhou created HADOOP-12969:
--

 Summary: Mark IPC.Client and IPC.Server as @Public, @Evolving
 Key: HADOOP-12969
 URL: https://issues.apache.org/jira/browse/HADOOP-12969
 Project: Hadoop Common
  Issue Type: Improvement
Reporter: Xiaobing Zhou






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[jira] [Created] (HADOOP-12970) Intermittent signature match failures in S3AFileSystem due connection closure

[Harsh J (JIRA)]

Harsh J created HADOOP-12970:


 Summary: Intermittent signature match failures in S3AFileSystem 
due connection closure
 Key: HADOOP-12970
 URL: https://issues.apache.org/jira/browse/HADOOP-12970
 Project: Hadoop Common
  Issue Type: Bug
  Components: fs/s3
Affects Versions: 2.7.0
Reporter: Harsh J
Assignee: Harsh J


S3AFileSystem's use of {{ObjectMetadata#clone()}} method inside the 
{{copyFile}} implementation may fail in circumstances where the connection used 
for obtaining the metadata is closed by the server (i.e. response carries a 
{{Connection: close}} header). Due to this header not being stripped away when 
the {{ObjectMetadata}} is created, and due to us cloning it for use in the next 
{{CopyObjectRequest}}, it causes the request to use {{Connection: close}} 
headers as a part of itself.

This causes signer related exceptions because the client now includes the 
{{Connection}} header as part of the {{SignedHeaders}}, but the S3 server does 
not receive the same value for it ({{Connection}} headers are likely stripped 
away before the S3 Server tries to match signature hashes), causing a failure 
like below:

{code}
2016-03-29 19:59:30,120 DEBUG [s3a-transfer-shared--pool1-t35] 
org.apache.http.wire: >> "Authorization: AWS4-HMAC-SHA256 
Credential=XXX/20160329/eu-central-1/s3/aws4_request, 
SignedHeaders=accept-ranges;connection;content-length;content-type;etag;host;last-modified;user-agent;x-amz-acl;x-amz-content-sha256;x-amz-copy-source;x-amz-date;x-amz-metadata-directive;x-amz-server-side-encryption;x-amz-version-id,
 Signature=MNOPQRSTUVWXYZ[\r][\n]"
…
com.amazonaws.services.s3.model.AmazonS3Exception: The request signature we 
calculated does not match the signature you provided. Check your key and 
signing method. (Service: Amazon S3; Status Code: 403; Error Code: 
SignatureDoesNotMatch; Request ID: ABC), S3 Extended Request ID: XYZ
{code}

This is intermittent because the S3 Server does not always add a {{Connection: 
close}} directive in its response, but whenever we receive it AND we clone it, 
the above exception would happen for the copy request. The copy request is 
often used in the context of FileOutputCommitter, when a lot of the MR attempt 
files on {{s3a://}} destination filesystem are to be moved to their parent 
directories post-commit.

I've also submitted a fix upstream with AWS Java SDK to strip out the 
{{Connection}} headers when dealing with {{ObjectMetadata}}, which is pending 
acceptance and release at: https://github.com/aws/aws-sdk-java/pull/669, but 
until that release is available and can be used by us, we'll need to workaround 
the clone approach by manually excluding the {{Connection}} header (not 
straight-forward due to the {{metadata}} object being private with no mutable 
access). We can remove such a change in future when there's a release available 
with the upstream fix.



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[jira] [Created] (HADOOP-12971) FileSystemShell doc should explain relative path

[John Zhuge (JIRA)]

John Zhuge created HADOOP-12971:
---

 Summary: FileSystemShell doc should explain relative path
 Key: HADOOP-12971
 URL: https://issues.apache.org/jira/browse/HADOOP-12971
 Project: Hadoop Common
  Issue Type: Improvement
  Components: documentation
Affects Versions: 2.7.2
Reporter: John Zhuge
Assignee: John Zhuge
Priority: Critical


Update 
https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-common/FileSystemShell.html
 with information about relative path and current working directory, as 
suggested by [~yzhangal] during HADOOP-10965 discussion.



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[xgong] YARN-4863. AHS Security login should be in serviceInit() instead of

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