[jira] [Commented] (FLINK-9366) Distribute Cache only works for client-accessible files

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-9366?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16496516#comment-16496516 ] 

ASF GitHub Bot commented on FLINK-9366:
---------------------------------------

GitHub user dawidwys opened a pull request:

    https://github.com/apache/flink/pull/6107

    [FLINK-9366] DistributedCache works with Distributed File System

    ## What is the purpose of the change
    
    Allows to use DistributeCache to cache files from cluster internal DFS (reverted behaviour).
    
    ## Brief change log
    
    *(for example:)*
      - Local files (based on uri schema) are distributed via BlobServer
      - Files in DFS are cached from DFS
    
    ## Verifying this change
    
    * Added test for distributing files through DFS: org.apache.flink.hdfstests.DistributedCacheDfsTest
    * local files shipping covered by previous tests 
    
    ## Does this pull request potentially affect one of the following parts:
    
      - Dependencies (does it add or upgrade a dependency): no
      - The public API, i.e., is any changed class annotated with `@Public(Evolving)`:no
      - The serializers: no
      - The runtime per-record code paths (performance sensitive): no 
      - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: no 
      - The S3 file system connector: no 
    
    ## Documentation
    
      - Does this pull request introduce a new feature? no


You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/dawidwys/flink FLINK-9366

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/flink/pull/6107.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #6107
    
----
commit cc1344d18e2b1d9953e21d5189f2813fdabd7b01
Author: Dawid Wysakowicz <dw...@...>
Date:   2018-05-31T12:35:44Z

    [FLINK-9366] DistributedCache works with Distributed File System

----


> Distribute Cache only works for client-accessible files
> -------------------------------------------------------
>
>                 Key: FLINK-9366
>                 URL: https://issues.apache.org/jira/browse/FLINK-9366
>             Project: Flink
>          Issue Type: Bug
>          Components: Client, Local Runtime
>    Affects Versions: 1.6.0
>            Reporter: Chesnay Schepler
>            Assignee: Dawid Wysakowicz
>            Priority: Blocker
>             Fix For: 1.6.0
>
>
> In FLINK-8620 the distributed cache was modified to the distribute files via the blob store, instead of downloading them from a distributed filesystem.
> Previously, taskmanagers would download requested files from the DFS. Now, they retrieve it form the blob store. This requires the client to preemptively upload all files used with distributed cache.
> As a result it is no longer possible to use the distributed cache for files that reside in a cluster-internal DFS, as the client cannot download it. This is a regression from the previous behavior and may break existing setups.
> [~aljoscha] [~dawidwys]



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)