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Posted to reviews@spark.apache.org by jsoltren <gi...@git.apache.org> on 2017/03/23 22:16:47 UTC

[GitHub] spark pull request #17402: [SPARK-7200] Add cleanup for memory leak tests to...

GitHub user jsoltren opened a pull request:

    https://github.com/apache/spark/pull/17402

    [SPARK-7200] Add cleanup for memory leak tests to after() in TaskMemo\u2026

    \u2026ryManagerSuite
    
    Cleans up all memory used by tests explicitly in after(). This new
    function has the JUnit @After tag and thus is guaranteed to run, even
    if an @Test method throws an exception.
    
    Testing:
    Ran tests locally.
    Hacked an existing test and made sure that a failure was reported in
    the original test, and not in after().
    Verified test logging in
    test-reports/org.apache.spark.memory.TaskMemoryManagerSuite.xml.
    
    ## What changes were proposed in this pull request?
    
    Updates TaskMemoryManagerSuite based on Josh Rosen's comments in SPARK-7200. It would be good to get some feedback as to whether or not this is the right direction.
    
    ## How was this patch tested?
    
    See "Testing" above.

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

    $ git pull https://github.com/jsoltren/spark jose-tungsten

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

    https://github.com/apache/spark/pull/17402.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 #17402
    
----
commit c44fc87971c2b313df69ac2815bae1824e7ddb1b
Author: Jos� Hiram Soltren <js...@gmail.com>
Date:   2017-03-10T19:57:26Z

    [SPARK-7200] Add cleanup for memory leak tests to after() in TaskMemoryManagerSuite
    
    Cleans up all memory used by tests explicitly in after(). This new
    function has the JUnit @After tag and thus is guaranteed to run, even
    if an @Test method throws an exception.
    
    Testing:
    Ran tests locally.
    Hacked an existing test and made sure that a failure was reported in
    the original test, and not in after().
    Verified test logging in
    test-reports/org.apache.spark.memory.TaskMemoryManagerSuite.xml.

----


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[GitHub] spark pull request #17402: [SPARK-7200] Check that memory is not leaked in T...

Posted by vanzin <gi...@git.apache.org>.
Github user vanzin commented on a diff in the pull request:

    https://github.com/apache/spark/pull/17402#discussion_r116886257
  
    --- Diff: core/src/test/java/org/apache/spark/memory/TaskMemoryManagerSuite.java ---
    @@ -25,27 +26,37 @@
     
     public class TaskMemoryManagerSuite {
     
    +  static TaskMemoryManager manager;
    +
    +  @After
    +  public void after() {
    +    Assert.assertEquals(0, manager.getMemoryConsumptionForThisTask());
    --- End diff --
    
    This sounds like this assert triggering, not the actual test failing?
    
    I'm talking about is leaking memory *and* inserting a `fail("blah")` in a test and seeing what's reported.


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[GitHub] spark issue #17402: [SPARK-7200] Check that memory is not leaked in TaskMemo...

Posted by vanzin <gi...@git.apache.org>.
Github user vanzin commented on the issue:

    https://github.com/apache/spark/pull/17402
  
    @jsoltren do you plan to follow up on Josh's comments? Seems like the scope of the bug was a little larger than you thought.


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[GitHub] spark issue #17402: [SPARK-7200] Check that memory is not leaked in TaskMemo...

Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the issue:

    https://github.com/apache/spark/pull/17402
  
    **[Test build #76992 has finished](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/76992/testReport)** for PR 17402 at commit [`e6ca027`](https://github.com/apache/spark/commit/e6ca027cc3d76fcd3eea1673cf8af6a4117cf12a).
     * This patch passes all tests.
     * This patch merges cleanly.
     * This patch adds no public classes.


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[GitHub] spark pull request #17402: [SPARK-7200] Check that memory is not leaked in T...

Posted by jsoltren <gi...@git.apache.org>.
Github user jsoltren commented on a diff in the pull request:

    https://github.com/apache/spark/pull/17402#discussion_r116883362
  
    --- Diff: core/src/test/java/org/apache/spark/memory/TaskMemoryManagerSuite.java ---
    @@ -25,27 +26,37 @@
     
     public class TaskMemoryManagerSuite {
     
    +  static TaskMemoryManager manager;
    +
    +  @After
    +  public void after() {
    +    Assert.assertEquals(0, manager.getMemoryConsumptionForThisTask());
    --- End diff --
    
    @squito had the same concern. I purposefully leaked some memory at the end of leakedPageMemoryIsDetected and got this very helpful trace:
    
    [info] Test org.apache.spark.memory.TaskMemoryManagerSuite.leakedPageMemoryIsDetected started
    [error] Test org.apache.spark.memory.TaskMemoryManagerSuite.leakedPageMemoryIsDetected failed: java.lang.AssertionError: expected:<0> but was:<4096>, took 0.007 sec
    [error]     at org.apache.spark.memory.TaskMemoryManagerSuite.after(TaskMemoryManagerSuite.java:34)
    [error]     ...


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[GitHub] spark issue #17402: [SPARK-7200] Check that memory is not leaked in TaskMemo...

Posted by jsoltren <gi...@git.apache.org>.
Github user jsoltren commented on the issue:

    https://github.com/apache/spark/pull/17402
  
    Yes, I'll post an updated change once I wrap up a couple of other things...
    
    > Seems like the scope of the bug was a little larger than you thought.
    
    @vanzin The scope of the bug (specifically the text "after each suite") was vague so this was a purposefully small proof-of-concept change. I tried to be clear about this in JIRA comments and in the PR description.
    
    That being said: yes, the direction I'll go is reviewing more existing tests and seeing where it would make sense to put a check for leaked memory. Ideally I'd put this in an after() or afterAll() block but I need to do some more digging to figure out exactly where.


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[GitHub] spark issue #17402: [SPARK-7200] Add cleanup for memory leak tests to after(...

Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the issue:

    https://github.com/apache/spark/pull/17402
  
    **[Test build #75129 has finished](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/75129/testReport)** for PR 17402 at commit [`c44fc87`](https://github.com/apache/spark/commit/c44fc87971c2b313df69ac2815bae1824e7ddb1b).
     * This patch passes all tests.
     * This patch merges cleanly.
     * This patch adds no public classes.


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[GitHub] spark pull request #17402: [SPARK-7200] Add cleanup for memory leak tests to...

Posted by vanzin <gi...@git.apache.org>.
Github user vanzin commented on a diff in the pull request:

    https://github.com/apache/spark/pull/17402#discussion_r108492013
  
    --- Diff: core/src/test/java/org/apache/spark/memory/TaskMemoryManagerSuite.java ---
    @@ -25,27 +26,37 @@
     
     public class TaskMemoryManagerSuite {
     
    +  static TaskMemoryManager manager;
    +
    +  @After
    +  public void after() {
    +    Assert.assertEquals(0, manager.getMemoryConsumptionForThisTask());
    +    Assert.assertEquals(0, manager.cleanUpAllAllocatedMemory());
    +    manager = null;
    +  }
    +
       @Test
       public void leakedPageMemoryIsDetected() {
    -    final TaskMemoryManager manager = new TaskMemoryManager(
    +    manager = new TaskMemoryManager(
           new StaticMemoryManager(
             new SparkConf().set("spark.memory.offHeap.enabled", "false"),
             Long.MAX_VALUE,
             Long.MAX_VALUE,
             1),
           0);
         final MemoryConsumer c = new TestMemoryConsumer(manager);
    -    manager.allocatePage(4096, c);  // leak memory
    +    final MemoryBlock block = manager.allocatePage(4096, c);  // leak memory
         Assert.assertEquals(4096, manager.getMemoryConsumptionForThisTask());
         Assert.assertEquals(4096, manager.cleanUpAllAllocatedMemory());
    +    manager.freePage(block, c);
    --- End diff --
    
    Is this really needed? Why isn't the call above freeing this memory?


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[GitHub] spark issue #17402: [SPARK-7200] Check that memory is not leaked in TaskMemo...

Posted by vanzin <gi...@git.apache.org>.
Github user vanzin commented on the issue:

    https://github.com/apache/spark/pull/17402
  
    Pretty sure we can close this out.


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[GitHub] spark issue #17402: [SPARK-7200] Check that memory is not leaked in TaskMemo...

Posted by JoshRosen <gi...@git.apache.org>.
Github user JoshRosen commented on the issue:

    https://github.com/apache/spark/pull/17402
  
    I think that the scope / intent of the original SPARK-7200 JIRA was to include this type of logic as a generic assertion in multiple suites so that we gain additional implicit assertions in suites which would otherwise maybe not have them, whereas this patch looks mostly like cleanup/refactoring of a single suite's existing assertions.
    
    I don't have any objections to this patch but I don't see it as a big win either. I don't think that this PR's specific changes will actually help to prevent any bugs because we don't appear to be adding assertions which weren't already present in the existing code.


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[GitHub] spark pull request #17402: [SPARK-7200] Check that memory is not leaked in T...

Posted by asfgit <gi...@git.apache.org>.
Github user asfgit closed the pull request at:

    https://github.com/apache/spark/pull/17402


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[GitHub] spark issue #17402: [SPARK-7200] Add cleanup for memory leak tests to after(...

Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the issue:

    https://github.com/apache/spark/pull/17402
  
    **[Test build #75129 has started](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/75129/testReport)** for PR 17402 at commit [`c44fc87`](https://github.com/apache/spark/commit/c44fc87971c2b313df69ac2815bae1824e7ddb1b).


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[GitHub] spark issue #17402: [SPARK-7200] Add cleanup for memory leak tests to after(...

Posted by AmplabJenkins <gi...@git.apache.org>.
Github user AmplabJenkins commented on the issue:

    https://github.com/apache/spark/pull/17402
  
    Can one of the admins verify this patch?


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[GitHub] spark issue #17402: [SPARK-7200] Check that memory is not leaked in TaskMemo...

Posted by AmplabJenkins <gi...@git.apache.org>.
Github user AmplabJenkins commented on the issue:

    https://github.com/apache/spark/pull/17402
  
    Merged build finished. Test PASSed.


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[GitHub] spark pull request #17402: [SPARK-7200] Add cleanup for memory leak tests to...

Posted by vanzin <gi...@git.apache.org>.
Github user vanzin commented on a diff in the pull request:

    https://github.com/apache/spark/pull/17402#discussion_r108491343
  
    --- Diff: core/src/test/java/org/apache/spark/memory/TaskMemoryManagerSuite.java ---
    @@ -25,27 +26,37 @@
     
     public class TaskMemoryManagerSuite {
     
    +  static TaskMemoryManager manager;
    +
    +  @After
    +  public void after() {
    +    Assert.assertEquals(0, manager.getMemoryConsumptionForThisTask());
    --- End diff --
    
    Add `Assert.assertNotNull(manager)`.
    
    Also, probably minor, but if a test fails, these checks will probably fail in weird ways and might mask the original error... I'd try to insert a failure in a test and seeing what happens.


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[GitHub] spark pull request #17402: [SPARK-7200] Add cleanup for memory leak tests to...

Posted by vanzin <gi...@git.apache.org>.
Github user vanzin commented on a diff in the pull request:

    https://github.com/apache/spark/pull/17402#discussion_r108491146
  
    --- Diff: core/src/test/java/org/apache/spark/memory/TaskMemoryManagerSuite.java ---
    @@ -25,27 +26,37 @@
     
     public class TaskMemoryManagerSuite {
     
    +  static TaskMemoryManager manager;
    --- End diff --
    
    Does not need to be static. Also should be `private`.


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[GitHub] spark pull request #17402: [SPARK-7200] Check that memory is not leaked in T...

Posted by jsoltren <gi...@git.apache.org>.
Github user jsoltren commented on a diff in the pull request:

    https://github.com/apache/spark/pull/17402#discussion_r116881319
  
    --- Diff: core/src/test/java/org/apache/spark/memory/TaskMemoryManagerSuite.java ---
    @@ -25,27 +26,37 @@
     
     public class TaskMemoryManagerSuite {
     
    +  static TaskMemoryManager manager;
    +
    +  @After
    +  public void after() {
    +    Assert.assertEquals(0, manager.getMemoryConsumptionForThisTask());
    +    Assert.assertEquals(0, manager.cleanUpAllAllocatedMemory());
    +    manager = null;
    +  }
    +
       @Test
       public void leakedPageMemoryIsDetected() {
    -    final TaskMemoryManager manager = new TaskMemoryManager(
    +    manager = new TaskMemoryManager(
           new StaticMemoryManager(
             new SparkConf().set("spark.memory.offHeap.enabled", "false"),
             Long.MAX_VALUE,
             Long.MAX_VALUE,
             1),
           0);
         final MemoryConsumer c = new TestMemoryConsumer(manager);
    -    manager.allocatePage(4096, c);  // leak memory
    +    final MemoryBlock block = manager.allocatePage(4096, c);  // leak memory
         Assert.assertEquals(4096, manager.getMemoryConsumptionForThisTask());
         Assert.assertEquals(4096, manager.cleanUpAllAllocatedMemory());
    +    manager.freePage(block, c);
    --- End diff --
    
    It should. We can check for that instead with:
    Assert.assertEquals(0, manager.cleanUpAllAllocatedMemory());


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[GitHub] spark issue #17402: [SPARK-7200] Check that memory is not leaked in TaskMemo...

Posted by jiangxb1987 <gi...@git.apache.org>.
Github user jiangxb1987 commented on the issue:

    https://github.com/apache/spark/pull/17402
  
    ping @jsoltren 


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[GitHub] spark issue #17402: [SPARK-7200] Check that memory is not leaked in TaskMemo...

Posted by AmplabJenkins <gi...@git.apache.org>.
Github user AmplabJenkins commented on the issue:

    https://github.com/apache/spark/pull/17402
  
    Test PASSed.
    Refer to this link for build results (access rights to CI server needed): 
    https://amplab.cs.berkeley.edu/jenkins//job/SparkPullRequestBuilder/76992/
    Test PASSed.


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[GitHub] spark issue #17402: [SPARK-7200] Check that memory is not leaked in TaskMemo...

Posted by jsoltren <gi...@git.apache.org>.
Github user jsoltren commented on the issue:

    https://github.com/apache/spark/pull/17402
  
    At this point I'd like to get this checked in whether or not @JoshRosen chimes in here. @HyukjinKwon @vanzin I've updated this based on the previous review feedback received. Thanks!


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[GitHub] spark issue #17402: [SPARK-7200] Check that memory is not leaked in TaskMemo...

Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the issue:

    https://github.com/apache/spark/pull/17402
  
    **[Test build #76992 has started](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/76992/testReport)** for PR 17402 at commit [`e6ca027`](https://github.com/apache/spark/commit/e6ca027cc3d76fcd3eea1673cf8af6a4117cf12a).


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[GitHub] spark issue #17402: [SPARK-7200] Add cleanup for memory leak tests to after(...

Posted by HyukjinKwon <gi...@git.apache.org>.
Github user HyukjinKwon commented on the issue:

    https://github.com/apache/spark/pull/17402
  
    I see. Thank you for your input.


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[GitHub] spark issue #17402: [SPARK-7200] Add cleanup for memory leak tests to after(...

Posted by AmplabJenkins <gi...@git.apache.org>.
Github user AmplabJenkins commented on the issue:

    https://github.com/apache/spark/pull/17402
  
    Merged build finished. Test PASSed.


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[GitHub] spark issue #17402: [SPARK-7200] Add cleanup for memory leak tests to after(...

Posted by AmplabJenkins <gi...@git.apache.org>.
Github user AmplabJenkins commented on the issue:

    https://github.com/apache/spark/pull/17402
  
    Test PASSed.
    Refer to this link for build results (access rights to CI server needed): 
    https://amplab.cs.berkeley.edu/jenkins//job/SparkPullRequestBuilder/75129/
    Test PASSed.


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[GitHub] spark issue #17402: [SPARK-7200] Add cleanup for memory leak tests to after(...

Posted by vanzin <gi...@git.apache.org>.
Github user vanzin commented on the issue:

    https://github.com/apache/spark/pull/17402
  
    ok to test


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[GitHub] spark issue #17402: [SPARK-7200] Add cleanup for memory leak tests to after(...

Posted by HyukjinKwon <gi...@git.apache.org>.
Github user HyukjinKwon commented on the issue:

    https://github.com/apache/spark/pull/17402
  
    Hi @jsoltren, is this still active?


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[GitHub] spark issue #17402: [SPARK-7200] Add cleanup for memory leak tests to after(...

Posted by jsoltren <gi...@git.apache.org>.
Github user jsoltren commented on the issue:

    https://github.com/apache/spark/pull/17402
  
    I'm still waiting on feedback from @joshrosen on my earlier question. I can update this patch in response to @vanzin's review feedback if it would help to get this checked in.
    
    IMO this is a pretty trivial fix that we should get checked in regardless.


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