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From Krishna Kishore Bonagiri <write2kish...@gmail.com>
Subject Re: setLocalResources() on ContainerLaunchContext
Date Wed, 07 Aug 2013 18:29:34 GMT
Hi Omkar,

  I will try that. I might have got 2 of '/' wrongly while trying it in
different ways to make it work. The file kishore/kk.ksh is accessible to
the same user that is running the AM container.

  And my another questions is to understand what are the exact benefits of
using this resource localization? Can you please explain me briefly or
point me some online documentation talking about it?

Thanks,
Kishore


On Wed, Aug 7, 2013 at 11:49 PM, Omkar Joshi <ojoshi@hortonworks.com> wrote:

> Good that your timestamp worked... Now for hdfs try this
> hdfs://<hdfs-host-name>:<hdfs-host-port><absolute-path>
> now verify that your absolute path is correct. I hope it will work.
> bin/hadoop fs -ls <absolute-path>
>
>
> hdfs://isredeng:8020*//*kishore/kk.ksh... why "//" ?? you have hdfs file
> at absolute location /kishore/kk.sh? is /kishore and /kishore/kk.sh
> accessible to the user who is making startContainer call or the one running
> AM container?
>
> Thanks,
> Omkar Joshi
> *Hortonworks Inc.* <http://www.hortonworks.com>
>
>
> On Tue, Aug 6, 2013 at 10:43 PM, Krishna Kishore Bonagiri <
> write2kishore@gmail.com> wrote:
>
>> Hi Harsh, Hitesh & Omkar,
>>
>>   Thanks for the replies.
>>
>> I tried getting the last modified timestamp like this and it works. Is
>> this a right thing to do?
>>
>>       File file = new File("/home_/dsadm/kishore/kk.ksh");
>>       shellRsrc.setTimestamp(file.lastModified());
>>
>>
>> And, when I tried using a hdfs file qualifying it with both node name and
>> port, it didn't work, I get a similar error as earlier.
>>
>>       String shellScriptPath = "hdfs://isredeng:8020//kishore/kk.ksh";
>>
>>
>> 13/08/07 01:36:28 INFO ApplicationMaster: Got container status for
>> containerID= container_1375853431091_0005_01_000002, state=COMPLETE,
>> exitStatus=-1000, diagnostics=File does not exist:
>> hdfs://isredeng:8020/kishore/kk.ksh
>>
>> 13/08/07 01:36:28 INFO ApplicationMaster: Got failure status for a
>> container : -1000
>>
>>
>>
>> On Wed, Aug 7, 2013 at 7:45 AM, Harsh J <harsh@cloudera.com> wrote:
>>
>>> Thanks Hitesh!
>>>
>>> P.s. Port isn't a requirement (and with HA URIs, you shouldn't add a
>>> port), but "isredeng" has to be the authority component.
>>>
>>> On Wed, Aug 7, 2013 at 7:37 AM, Hitesh Shah <hitesh@apache.org> wrote:
>>> > @Krishna, your logs showed the file error for
>>> "hdfs://isredeng/kishore/kk.ksh"
>>> >
>>> > I am assuming you have tried dfs -ls /kishore/kk.ksh and confirmed
>>> that the file exists? Also the qualified path seems to be missing the
>>> namenode port. I need to go back and check if a path without the port works
>>> by assuming the default namenode port.
>>> >
>>> > @Harsh, adding a helper function seems like a good idea. Let me file a
>>> jira to have the above added to one of the helper/client libraries.
>>> >
>>> > thanks
>>> > -- Hitesh
>>> >
>>> > On Aug 6, 2013, at 6:47 PM, Harsh J wrote:
>>> >
>>> >> It is kinda unnecessary to be asking developers to load in timestamps
>>> and
>>> >> length themselves. Why not provide a java.io.File, or perhaps a Path
>>> >> accepting API, that gets it automatically on their behalf using the
>>> >> FileSystem API internally?
>>> >>
>>> >> P.s. A HDFS file gave him a FNF, while a Local file gave him a proper
>>> >> TS/Len error. I'm guessing there's a bug here w.r.t. handling HDFS
>>> >> paths.
>>> >>
>>> >> On Wed, Aug 7, 2013 at 12:35 AM, Hitesh Shah <hitesh@apache.org>
>>> wrote:
>>> >>> Hi Krishna,
>>> >>>
>>> >>> YARN downloads a specified local resource on the container's node
>>> from the url specified. In all situtations, the remote url needs to be a
>>> fully qualified path. To verify that the file at the remote url is still
>>> valid, YARN expects you to provide the length and last modified timestamp
>>> of that file.
>>> >>>
>>> >>> If you use an hdfs path such as hdfs://namenode:port/<absolute
path
>>> to file>, you will need to get the length and timestamp from HDFS.
>>> >>> If you use file:///, the file should exist on all nodes and all
>>> nodes should have the file with the same length and timestamp for
>>> localization to work. ( For a single node setup, this works but tougher to
>>> get right on a multi-node setup - deploying the file via a rpm should
>>> likely work).
>>> >>>
>>> >>> -- Hitesh
>>> >>>
>>> >>> On Aug 6, 2013, at 11:11 AM, Omkar Joshi wrote:
>>> >>>
>>> >>>> Hi,
>>> >>>>
>>> >>>> You need to match the timestamp. Probably get the timestamp
locally
>>> before adding it. This is explicitly done to ensure that file is not
>>> updated after user makes the call to avoid possible errors.
>>> >>>>
>>> >>>>
>>> >>>> Thanks,
>>> >>>> Omkar Joshi
>>> >>>> Hortonworks Inc.
>>> >>>>
>>> >>>>
>>> >>>> On Tue, Aug 6, 2013 at 5:25 AM, Krishna Kishore Bonagiri <
>>> write2kishore@gmail.com> wrote:
>>> >>>> I tried the following and it works!
>>> >>>> String shellScriptPath = "file:///home_/dsadm/kishore/kk.ksh";
>>> >>>>
>>> >>>> But now getting a timestamp error like below, when I passed
0 to
>>> setTimestamp()
>>> >>>>
>>> >>>> 13/08/06 08:23:48 INFO ApplicationMaster: Got container status
for
>>> containerID= container_1375784329048_0017_01_000002, state=COMPLETE,
>>> exitStatus=-1000, diagnostics=Resource file:/home_/dsadm/kishore/kk.ksh
>>> changed on src filesystem (expected 0, was 1367580580000
>>> >>>>
>>> >>>>
>>> >>>>
>>> >>>>
>>> >>>> On Tue, Aug 6, 2013 at 5:24 PM, Harsh J <harsh@cloudera.com>
wrote:
>>> >>>> Can you try passing a fully qualified local path? That is,
>>> including the file:/ scheme
>>> >>>>
>>> >>>> On Aug 6, 2013 4:05 PM, "Krishna Kishore Bonagiri" <
>>> write2kishore@gmail.com> wrote:
>>> >>>> Hi Harsh,
>>> >>>>   The setResource() call on LocalResource() is expecting an
>>> argument of type org.apache.hadoop.yarn.api.records.URL which is converted
>>> from a string in the form of URI. This happens in the following call of
>>> Distributed Shell example,
>>> >>>>
>>> >>>> shellRsrc.setResource(ConverterUtils.getYarnUrlFromURI(new URI(
>>> shellScriptPath)));
>>> >>>>
>>> >>>> So, if I give a local file I get a parsing error like below,
which
>>> is when I changed it to an HDFS file thinking that it should be given like
>>> that only. Could you please give an example of how else it could be used,
>>> using a local file as you are saying?
>>> >>>>
>>> >>>> 2013-08-06 06:23:12,942 WARN
>>> org.apache.hadoop.yarn.server.nodemanager.containermanager.container.Container:
>>> Failed to parse resource-request
>>> >>>> java.net.URISyntaxException: Expected scheme name at index 0:
>>> :///home_/dsadm/kishore/kk.ksh
>>> >>>>        at java.net.URI$Parser.fail(URI.java:2820)
>>> >>>>        at java.net.URI$Parser.failExpecting(URI.java:2826)
>>> >>>>        at java.net.URI$Parser.parse(URI.java:3015)
>>> >>>>        at java.net.URI.<init>(URI.java:747)
>>> >>>>        at
>>> org.apache.hadoop.yarn.util.ConverterUtils.getPathFromYarnURL(ConverterUtils.java:77)
>>> >>>>        at
>>> org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.LocalResourceRequest.<init>(LocalResourceRequest.java:46)
>>> >>>>
>>> >>>>
>>> >>>>
>>> >>>> On Tue, Aug 6, 2013 at 3:36 PM, Harsh J <harsh@cloudera.com>
wrote:
>>> >>>> To be honest, I've never tried loading a HDFS file onto the
>>> >>>> LocalResource this way. I usually just pass a local file and
that
>>> >>>> works just fine. There may be something in the URI transformation
>>> >>>> possibly breaking a HDFS source, but try passing a local file
- does
>>> >>>> that fail too? The Shell example uses a local file.
>>> >>>>
>>> >>>> On Tue, Aug 6, 2013 at 10:54 AM, Krishna Kishore Bonagiri
>>> >>>> <write2kishore@gmail.com> wrote:
>>> >>>>> Hi Harsh,
>>> >>>>>
>>> >>>>>  Please see if this is useful, I got a stack trace after
the error
>>> has
>>> >>>>> occurred....
>>> >>>>>
>>> >>>>> 2013-08-06 00:55:30,559 INFO
>>> >>>>>
>>> org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor: CWD set
>>> >>>>> to
>>> /tmp/nm-local-dir/usercache/dsadm/appcache/application_1375716148174_0004
>>> >>>>> =
>>> >>>>>
>>> file:/tmp/nm-local-dir/usercache/dsadm/appcache/application_1375716148174_0004
>>> >>>>> 2013-08-06 00:55:31,017 ERROR
>>> >>>>> org.apache.hadoop.security.UserGroupInformation:
>>> PriviledgedActionException
>>> >>>>> as:dsadm (auth:SIMPLE) cause:java.io.FileNotFoundException:
File
>>> does not
>>> >>>>> exist: hdfs://isredeng/kishore/kk.ksh
>>> >>>>> 2013-08-06 00:55:31,029 INFO
>>> >>>>>
>>> org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService:
>>> >>>>> DEBUG: FAILED { hdfs://isredeng/kishore/kk.ksh, 0, FILE,
null },
>>> File does
>>> >>>>> not exist: hdfs://isredeng/kishore/kk.ksh
>>> >>>>> 2013-08-06 00:55:31,031 INFO
>>> >>>>>
>>> org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.LocalizedResource:
>>> >>>>> Resource hdfs://isredeng/kishore/kk.ksh transitioned from
>>> DOWNLOADING to
>>> >>>>> FAILED
>>> >>>>> 2013-08-06 00:55:31,034 INFO
>>> >>>>>
>>> org.apache.hadoop.yarn.server.nodemanager.containermanager.container.Container:
>>> >>>>> Container container_1375716148174_0004_01_000002 transitioned
from
>>> >>>>> LOCALIZING to LOCALIZATION_FAILED
>>> >>>>> 2013-08-06 00:55:31,035 INFO
>>> >>>>>
>>> org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.LocalResourcesTrackerImpl:
>>> >>>>> Container container_1375716148174_0004_01_000002 sent RELEASE
>>> event on a
>>> >>>>> resource request { hdfs://isredeng/kishore/kk.ksh, 0, FILE,
null }
>>> not
>>> >>>>> present in cache.
>>> >>>>> 2013-08-06 00:55:31,036 WARN org.apache.hadoop.ipc.Client:
>>> interrupted
>>> >>>>> waiting to send rpc request to server
>>> >>>>> java.lang.InterruptedException
>>> >>>>>        at
>>> >>>>>
>>> java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireSharedInterruptibly(AbstractQueuedSynchronizer.java:1290)
>>> >>>>>        at
>>> >>>>> java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:229)
>>> >>>>>        at java.util.concurrent.FutureTask.get(FutureTask.java:94)
>>> >>>>>        at
>>> >>>>>
>>> org.apache.hadoop.ipc.Client$Connection.sendRpcRequest(Client.java:930)
>>> >>>>>        at org.apache.hadoop.ipc.Client.call(Client.java:1285)
>>> >>>>>        at org.apache.hadoop.ipc.Client.call(Client.java:1264)
>>> >>>>>        at
>>> >>>>>
>>> org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:206)
>>> >>>>>        at $Proxy22.heartbeat(Unknown Source)
>>> >>>>>        at
>>> >>>>>
>>> org.apache.hadoop.yarn.server.nodemanager.api.impl.pb.client.LocalizationProtocolPBClientImpl.heartbeat(LocalizationProtocolPBClientImpl.java:62)
>>> >>>>>        at
>>> >>>>>
>>> org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ContainerLocalizer.localizeFiles(ContainerLocalizer.java:249)
>>> >>>>>        at
>>> >>>>>
>>> org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ContainerLocalizer.runLocalization(ContainerLocalizer.java:163)
>>> >>>>>        at
>>> >>>>>
>>> org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor.startLocalizer(DefaultContainerExecutor.java:106)
>>> >>>>>        at
>>> >>>>>
>>> org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService$LocalizerRunner.run(ResourceLocalizationService.java:979)
>>> >>>>>
>>> >>>>>
>>> >>>>>
>>> >>>>> And here is my code snippet:
>>> >>>>>
>>> >>>>>      ContainerLaunchContext ctx =
>>> >>>>> Records.newRecord(ContainerLaunchContext.class);
>>> >>>>>
>>> >>>>>      ctx.setEnvironment(oshEnv);
>>> >>>>>
>>> >>>>>      // Set the local resources
>>> >>>>>      Map<String, LocalResource> localResources = new
>>> HashMap<String,
>>> >>>>> LocalResource>();
>>> >>>>>
>>> >>>>>      LocalResource shellRsrc =
>>> Records.newRecord(LocalResource.class);
>>> >>>>>      shellRsrc.setType(LocalResourceType.FILE);
>>> >>>>>      shellRsrc.setVisibility(LocalResourceVisibility.APPLICATION);
>>> >>>>>      String shellScriptPath = "hdfs://isredeng//kishore/kk.ksh";
>>> >>>>>      try {
>>> >>>>>        shellRsrc.setResource(ConverterUtils.getYarnUrlFromURI(new
>>> >>>>> URI(shellScriptPath)));
>>> >>>>>      } catch (URISyntaxException e) {
>>> >>>>>        LOG.error("Error when trying to use shell script
path
>>> specified"
>>> >>>>>            + " in env, path=" + shellScriptPath);
>>> >>>>>        e.printStackTrace();
>>> >>>>>      }
>>> >>>>>
>>> >>>>>      shellRsrc.setTimestamp(0/*shellScriptPathTimestamp*/);
>>> >>>>>      shellRsrc.setSize(0/*shellScriptPathLen*/);
>>> >>>>>      String ExecShellStringPath = "ExecShellScript.sh";
>>> >>>>>      localResources.put(ExecShellStringPath, shellRsrc);
>>> >>>>>
>>> >>>>>      ctx.setLocalResources(localResources);
>>> >>>>>
>>> >>>>>
>>> >>>>> Please let me know if you need anything else.
>>> >>>>>
>>> >>>>> Thanks,
>>> >>>>> Kishore
>>> >>>>>
>>> >>>>>
>>> >>>>>
>>> >>>>> On Tue, Aug 6, 2013 at 12:05 AM, Harsh J <harsh@cloudera.com>
>>> wrote:
>>> >>>>>>
>>> >>>>>> The detail is insufficient to answer why. You should
also have
>>> gotten
>>> >>>>>> a trace after it, can you post that? If possible, also
the
>>> relevant
>>> >>>>>> snippets of code.
>>> >>>>>>
>>> >>>>>> On Mon, Aug 5, 2013 at 6:36 PM, Krishna Kishore Bonagiri
>>> >>>>>> <write2kishore@gmail.com> wrote:
>>> >>>>>>> Hi Harsh,
>>> >>>>>>> Thanks for the quick and detailed reply, it really
helps. I am
>>> trying
>>> >>>>>>> to
>>> >>>>>>> use it and getting this error in node manager's
log:
>>> >>>>>>>
>>> >>>>>>> 2013-08-05 08:57:28,867 ERROR
>>> >>>>>>> org.apache.hadoop.security.UserGroupInformation:
>>> >>>>>>> PriviledgedActionException
>>> >>>>>>> as:dsadm (auth:SIMPLE) cause:java.io.FileNotFoundException:
File
>>> does
>>> >>>>>>> not
>>> >>>>>>> exist: hdfs://isredeng/kishore/kk.ksh
>>> >>>>>>>
>>> >>>>>>>
>>> >>>>>>> This file is there on the machine with name "isredeng",
I could
>>> do ls
>>> >>>>>>> for
>>> >>>>>>> that file as below:
>>> >>>>>>>
>>> >>>>>>> -bash-4.1$ hadoop fs -ls kishore/kk.ksh
>>> >>>>>>> 13/08/05 09:01:03 WARN util.NativeCodeLoader: Unable
to load
>>> >>>>>>> native-hadoop
>>> >>>>>>> library for your platform... using builtin-java
classes where
>>> applicable
>>> >>>>>>> Found 1 items
>>> >>>>>>> -rw-r--r--   3 dsadm supergroup       1046 2013-08-05
08:48
>>> >>>>>>> kishore/kk.ksh
>>> >>>>>>>
>>> >>>>>>> Note: I am using a single node cluster
>>> >>>>>>>
>>> >>>>>>> Thanks,
>>> >>>>>>> Kishore
>>> >>>>>>>
>>> >>>>>>>
>>> >>>>>>>
>>> >>>>>>>
>>> >>>>>>> On Mon, Aug 5, 2013 at 3:00 PM, Harsh J <harsh@cloudera.com>
>>> wrote:
>>> >>>>>>>>
>>> >>>>>>>> The string for each LocalResource in the map
can be anything
>>> that
>>> >>>>>>>> serves as a common identifier name for your
application. At
>>> execution
>>> >>>>>>>> time, the passed resource filename will be aliased
to the name
>>> you've
>>> >>>>>>>> mapped it to, so that the application code need
not track
>>> special
>>> >>>>>>>> names. The behavior is very similar to how you
can, in MR,
>>> define a
>>> >>>>>>>> symlink name for a DistributedCache entry (e.g.
>>> foo.jar#bar.jar).
>>> >>>>>>>>
>>> >>>>>>>> For an example, checkout the DistributedShell
app sources.
>>> >>>>>>>>
>>> >>>>>>>> Over [1], you can see we take a user provided
file path to a
>>> shell
>>> >>>>>>>> script. This can be named anything as it is
user-supplied.
>>> >>>>>>>> Onto [2], we define this as a local resource
[2.1] and embed it
>>> with a
>>> >>>>>>>> different name (the string you ask about) [2.2],
as defined at
>>> [3] as
>>> >>>>>>>> an application reference-able constant.
>>> >>>>>>>> Note that in [4], we add to the Container arguments
the aliased
>>> name
>>> >>>>>>>> we mapped it to (i.e. [3]) and not the original
filename we
>>> received
>>> >>>>>>>> from the user. The resource is placed on the
container with
>>> this name
>>> >>>>>>>> instead, so thats what we choose to execute.
>>> >>>>>>>>
>>> >>>>>>>> [1] -
>>> >>>>>>>>
>>> >>>>>>>>
>>> https://github.com/apache/hadoop-common/blob/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-applications-distributedshell/src/main/java/org/apache/hadoop/yarn/applications/distributedshell/ApplicationMaster.java#L390
>>> >>>>>>>>
>>> >>>>>>>> [2] - [2.1]
>>> >>>>>>>>
>>> >>>>>>>>
>>> https://github.com/apache/hadoop-common/blob/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-applications-distributedshell/src/main/java/org/apache/hadoop/yarn/applications/distributedshell/ApplicationMaster.java#L764
>>> >>>>>>>> and [2.2]
>>> >>>>>>>>
>>> >>>>>>>>
>>> https://github.com/apache/hadoop-common/blob/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-applications-distributedshell/src/main/java/org/apache/hadoop/yarn/applications/distributedshell/ApplicationMaster.java#L780
>>> >>>>>>>>
>>> >>>>>>>> [3] -
>>> >>>>>>>>
>>> >>>>>>>>
>>> https://github.com/apache/hadoop-common/blob/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-applications-distributedshell/src/main/java/org/apache/hadoop/yarn/applications/distributedshell/ApplicationMaster.java#L205
>>> >>>>>>>>
>>> >>>>>>>> [4] -
>>> >>>>>>>>
>>> >>>>>>>>
>>> https://github.com/apache/hadoop-common/blob/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-applications-distributedshell/src/main/java/org/apache/hadoop/yarn/applications/distributedshell/ApplicationMaster.java#L791
>>> >>>>>>>>
>>> >>>>>>>> On Mon, Aug 5, 2013 at 2:44 PM, Krishna Kishore
Bonagiri
>>> >>>>>>>> <write2kishore@gmail.com> wrote:
>>> >>>>>>>>> Hi,
>>> >>>>>>>>>
>>> >>>>>>>>>  Can someone please tell me what is the
use of calling
>>> >>>>>>>>> setLocalResources()
>>> >>>>>>>>> on ContainerLaunchContext?
>>> >>>>>>>>>
>>> >>>>>>>>>  And, also an example of how to use this
will help...
>>> >>>>>>>>>
>>> >>>>>>>>> I couldn't guess what is the String in the
map that is passed
>>> to
>>> >>>>>>>>> setLocalResources() like below:
>>> >>>>>>>>>
>>> >>>>>>>>>      // Set the local resources
>>> >>>>>>>>>      Map<String, LocalResource> localResources
= new
>>> HashMap<String,
>>> >>>>>>>>> LocalResource>();
>>> >>>>>>>>>
>>> >>>>>>>>> Thanks,
>>> >>>>>>>>> Kishore
>>> >>>>>>>>>
>>> >>>>>>>>
>>> >>>>>>>>
>>> >>>>>>>>
>>> >>>>>>>> --
>>> >>>>>>>> Harsh J
>>> >>>>>>>
>>> >>>>>>>
>>> >>>>>>
>>> >>>>>>
>>> >>>>>>
>>> >>>>>> --
>>> >>>>>> Harsh J
>>> >>>>>
>>> >>>>>
>>> >>>>
>>> >>>>
>>> >>>>
>>> >>>> --
>>> >>>> Harsh J
>>> >>>>
>>> >>>>
>>> >>>>
>>> >>>
>>> >>
>>> >>
>>> >>
>>> >> --
>>> >> Harsh J
>>> >
>>>
>>>
>>>
>>> --
>>> Harsh J
>>>
>>
>>
>

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