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Posted to reviews@spark.apache.org by zsxwing <gi...@git.apache.org> on 2015/04/05 18:01:03 UTC
[GitHub] spark pull request: [SPARK-6602][Core] Update MapOutputTrackerMast...
GitHub user zsxwing opened a pull request:
https://github.com/apache/spark/pull/5371
[SPARK-6602][Core] Update MapOutputTrackerMasterActor to MapOutputTrackerMasterEndpoint
This is the second PR for [SPARK-6602]. It updated MapOutputTrackerMasterActor and its unit tests.
cc @rxin
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/zsxwing/spark rpc-rewrite-part2
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/5371.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 #5371
----
commit 134fe7b6909f6d451aa3fec17a9fcc62facaef03
Author: zsxwing <zs...@gmail.com>
Date: 2015-03-06T11:42:36Z
Update MapOutputTrackerMasterActor to MapOutputTrackerMasterEndpoint
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[GitHub] spark pull request: [SPARK-6602][Core] Update MapOutputTrackerMast...
Posted by AmplabJenkins <gi...@git.apache.org>.
Github user AmplabJenkins commented on the pull request:
https://github.com/apache/spark/pull/5371#issuecomment-89815695
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[GitHub] spark pull request: [SPARK-6602][Core] Update MapOutputTrackerMast...
Posted by rxin <gi...@git.apache.org>.
Github user rxin commented on the pull request:
https://github.com/apache/spark/pull/5371#issuecomment-89899146
LGTM.
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[GitHub] spark pull request: [SPARK-6602][Core] Update MapOutputTrackerMast...
Posted by rxin <gi...@git.apache.org>.
Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/5371#discussion_r27779407
--- Diff: core/src/main/scala/org/apache/spark/MapOutputTracker.scala ---
@@ -53,19 +52,19 @@ private[spark] class MapOutputTrackerMasterActor(tracker: MapOutputTrackerMaster
val msg = s"Map output statuses were $serializedSize bytes which " +
s"exceeds spark.akka.frameSize ($maxAkkaFrameSize bytes)."
- /* For SPARK-1244 we'll opt for just logging an error and then throwing an exception.
- * Note that on exception the actor will just restart. A bigger refactoring (SPARK-1239)
- * will ultimately remove this entire code path. */
+ /* For SPARK-1244 we'll opt for just logging an error and then sending it to the sender.
+ * A bigger refactoring (SPARK-1239) will ultimately remove this entire code path. */
val exception = new SparkException(msg)
logError(msg, exception)
- throw exception
+ context.sendFailure(exception)
--- End diff --
Does Akka always serialize exceptions? There are exceptions that cannot be serialized, and we should be careful there.
Can you add a unit test calling sendFailure with an unserializable exception to make sure things still work?
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[GitHub] spark pull request: [SPARK-6602][Core] Update MapOutputTrackerMast...
Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the pull request:
https://github.com/apache/spark/pull/5371#issuecomment-89899089
[Test build #29736 has started](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/29736/consoleFull) for PR 5371 at commit [`93c6c20`](https://github.com/apache/spark/commit/93c6c20fe5fa691edb069476066d2e7589c755ca).
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[GitHub] spark pull request: [SPARK-6602][Core] Update MapOutputTrackerMast...
Posted by asfgit <gi...@git.apache.org>.
Github user asfgit closed the pull request at:
https://github.com/apache/spark/pull/5371
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[GitHub] spark pull request: [SPARK-6602][Core] Update MapOutputTrackerMast...
Posted by rxin <gi...@git.apache.org>.
Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/5371#discussion_r27783751
--- Diff: core/src/main/scala/org/apache/spark/MapOutputTracker.scala ---
@@ -53,19 +52,19 @@ private[spark] class MapOutputTrackerMasterActor(tracker: MapOutputTrackerMaster
val msg = s"Map output statuses were $serializedSize bytes which " +
s"exceeds spark.akka.frameSize ($maxAkkaFrameSize bytes)."
- /* For SPARK-1244 we'll opt for just logging an error and then throwing an exception.
- * Note that on exception the actor will just restart. A bigger refactoring (SPARK-1239)
- * will ultimately remove this entire code path. */
+ /* For SPARK-1244 we'll opt for just logging an error and then sending it to the sender.
+ * A bigger refactoring (SPARK-1239) will ultimately remove this entire code path. */
val exception = new SparkException(msg)
logError(msg, exception)
- throw exception
+ context.sendFailure(exception)
--- End diff --
One more thing - can you update the RpcEnv doc to specify what happens in the case of uncaught exceptions?
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[GitHub] spark pull request: [SPARK-6602][Core] Update MapOutputTrackerMast...
Posted by AmplabJenkins <gi...@git.apache.org>.
Github user AmplabJenkins commented on the pull request:
https://github.com/apache/spark/pull/5371#issuecomment-89902671
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[GitHub] spark pull request: [SPARK-6602][Core] Update MapOutputTrackerMast...
Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the pull request:
https://github.com/apache/spark/pull/5371#issuecomment-89915131
[Test build #29736 has finished](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/29736/consoleFull) for PR 5371 at commit [`93c6c20`](https://github.com/apache/spark/commit/93c6c20fe5fa691edb069476066d2e7589c755ca).
* This patch **passes all tests**.
* This patch merges cleanly.
* This patch adds no public classes.
* This patch does not change any dependencies.
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[GitHub] spark pull request: [SPARK-6602][Core] Update MapOutputTrackerMast...
Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the pull request:
https://github.com/apache/spark/pull/5371#issuecomment-89918068
[Test build #29738 has finished](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/29738/consoleFull) for PR 5371 at commit [`fcf3816`](https://github.com/apache/spark/commit/fcf38162ce6d0263f3dabadc0c8f603d49bf7c46).
* This patch **passes all tests**.
* This patch merges cleanly.
* This patch adds no public classes.
* This patch does not change any dependencies.
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[GitHub] spark pull request: [SPARK-6602][Core] Update MapOutputTrackerMast...
Posted by rxin <gi...@git.apache.org>.
Github user rxin commented on the pull request:
https://github.com/apache/spark/pull/5371#issuecomment-89918342
Merging in master. Thanks.
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[GitHub] spark pull request: [SPARK-6602][Core] Update MapOutputTrackerMast...
Posted by zsxwing <gi...@git.apache.org>.
Github user zsxwing commented on a diff in the pull request:
https://github.com/apache/spark/pull/5371#discussion_r27783706
--- Diff: core/src/main/scala/org/apache/spark/MapOutputTracker.scala ---
@@ -53,19 +52,19 @@ private[spark] class MapOutputTrackerMasterActor(tracker: MapOutputTrackerMaster
val msg = s"Map output statuses were $serializedSize bytes which " +
s"exceeds spark.akka.frameSize ($maxAkkaFrameSize bytes)."
- /* For SPARK-1244 we'll opt for just logging an error and then throwing an exception.
- * Note that on exception the actor will just restart. A bigger refactoring (SPARK-1239)
- * will ultimately remove this entire code path. */
+ /* For SPARK-1244 we'll opt for just logging an error and then sending it to the sender.
+ * A bigger refactoring (SPARK-1239) will ultimately remove this entire code path. */
val exception = new SparkException(msg)
logError(msg, exception)
- throw exception
+ context.sendFailure(exception)
--- End diff --
Such exception will be swallowed by Akka by default. I added ErrorMonitor to handle errors caught by Akka. Although they can not be serialized, at least we can log them.
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[GitHub] spark pull request: [SPARK-6602][Core] Update MapOutputTrackerMast...
Posted by zsxwing <gi...@git.apache.org>.
Github user zsxwing commented on a diff in the pull request:
https://github.com/apache/spark/pull/5371#discussion_r27783891
--- Diff: core/src/main/scala/org/apache/spark/MapOutputTracker.scala ---
@@ -53,19 +52,19 @@ private[spark] class MapOutputTrackerMasterActor(tracker: MapOutputTrackerMaster
val msg = s"Map output statuses were $serializedSize bytes which " +
s"exceeds spark.akka.frameSize ($maxAkkaFrameSize bytes)."
- /* For SPARK-1244 we'll opt for just logging an error and then throwing an exception.
- * Note that on exception the actor will just restart. A bigger refactoring (SPARK-1239)
- * will ultimately remove this entire code path. */
+ /* For SPARK-1244 we'll opt for just logging an error and then sending it to the sender.
+ * A bigger refactoring (SPARK-1239) will ultimately remove this entire code path. */
val exception = new SparkException(msg)
logError(msg, exception)
- throw exception
+ context.sendFailure(exception)
--- End diff --
Done.
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[GitHub] spark pull request: [SPARK-6602][Core] Update MapOutputTrackerMast...
Posted by zsxwing <gi...@git.apache.org>.
Github user zsxwing commented on a diff in the pull request:
https://github.com/apache/spark/pull/5371#discussion_r27782118
--- Diff: core/src/main/scala/org/apache/spark/MapOutputTracker.scala ---
@@ -53,19 +52,19 @@ private[spark] class MapOutputTrackerMasterActor(tracker: MapOutputTrackerMaster
val msg = s"Map output statuses were $serializedSize bytes which " +
s"exceeds spark.akka.frameSize ($maxAkkaFrameSize bytes)."
- /* For SPARK-1244 we'll opt for just logging an error and then throwing an exception.
- * Note that on exception the actor will just restart. A bigger refactoring (SPARK-1239)
- * will ultimately remove this entire code path. */
+ /* For SPARK-1244 we'll opt for just logging an error and then sending it to the sender.
+ * A bigger refactoring (SPARK-1239) will ultimately remove this entire code path. */
val exception = new SparkException(msg)
logError(msg, exception)
- throw exception
+ context.sendFailure(exception)
--- End diff --
> There are exceptions that cannot be serialized, and we should be careful there.
Because `Throwable implements java.io.Serializable`, I assume all exceptions can be serialized. Do you mean that some exception may throw an exception in `writeObject(java.io.ObjectOutputStream out)` to prevent it from being serialized?
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[GitHub] spark pull request: [SPARK-6602][Core] Update MapOutputTrackerMast...
Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the pull request:
https://github.com/apache/spark/pull/5371#issuecomment-89902657
[Test build #29737 has finished](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/29737/consoleFull) for PR 5371 at commit [`4013a22`](https://github.com/apache/spark/commit/4013a22159246985758ffa012020bde30054c7ac).
* This patch **fails Scala style tests**.
* This patch merges cleanly.
* This patch adds no public classes.
* This patch does not change any dependencies.
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[GitHub] spark pull request: [SPARK-6602][Core] Update MapOutputTrackerMast...
Posted by rxin <gi...@git.apache.org>.
Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/5371#discussion_r27779533
--- Diff: core/src/main/scala/org/apache/spark/MapOutputTracker.scala ---
@@ -53,19 +52,19 @@ private[spark] class MapOutputTrackerMasterActor(tracker: MapOutputTrackerMaster
val msg = s"Map output statuses were $serializedSize bytes which " +
s"exceeds spark.akka.frameSize ($maxAkkaFrameSize bytes)."
- /* For SPARK-1244 we'll opt for just logging an error and then throwing an exception.
- * Note that on exception the actor will just restart. A bigger refactoring (SPARK-1239)
- * will ultimately remove this entire code path. */
+ /* For SPARK-1244 we'll opt for just logging an error and then sending it to the sender.
+ * A bigger refactoring (SPARK-1239) will ultimately remove this entire code path. */
val exception = new SparkException(msg)
logError(msg, exception)
- throw exception
+ context.sendFailure(exception)
--- End diff --
This also brings another question: what's the semantics in the case of exceptions? Are they ignored, logged and ignored, or propagated back to the caller?
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[GitHub] spark pull request: [SPARK-6602][Core] Update MapOutputTrackerMast...
Posted by rxin <gi...@git.apache.org>.
Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/5371#discussion_r27782140
--- Diff: core/src/main/scala/org/apache/spark/MapOutputTracker.scala ---
@@ -53,19 +52,19 @@ private[spark] class MapOutputTrackerMasterActor(tracker: MapOutputTrackerMaster
val msg = s"Map output statuses were $serializedSize bytes which " +
s"exceeds spark.akka.frameSize ($maxAkkaFrameSize bytes)."
- /* For SPARK-1244 we'll opt for just logging an error and then throwing an exception.
- * Note that on exception the actor will just restart. A bigger refactoring (SPARK-1239)
- * will ultimately remove this entire code path. */
+ /* For SPARK-1244 we'll opt for just logging an error and then sending it to the sender.
+ * A bigger refactoring (SPARK-1239) will ultimately remove this entire code path. */
val exception = new SparkException(msg)
logError(msg, exception)
- throw exception
+ context.sendFailure(exception)
--- End diff --
In an ideal world all exceptions should be serializable, but I've seen in the past an exception that was not serializable (because it contained some field that was not serializable).
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[GitHub] spark pull request: [SPARK-6602][Core] Update MapOutputTrackerMast...
Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the pull request:
https://github.com/apache/spark/pull/5371#issuecomment-89906164
[Test build #29738 has started](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/29738/consoleFull) for PR 5371 at commit [`fcf3816`](https://github.com/apache/spark/commit/fcf38162ce6d0263f3dabadc0c8f603d49bf7c46).
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[GitHub] spark pull request: [SPARK-6602][Core] Update MapOutputTrackerMast...
Posted by AmplabJenkins <gi...@git.apache.org>.
Github user AmplabJenkins commented on the pull request:
https://github.com/apache/spark/pull/5371#issuecomment-89915145
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[GitHub] spark pull request: [SPARK-6602][Core] Update MapOutputTrackerMast...
Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the pull request:
https://github.com/apache/spark/pull/5371#issuecomment-89902079
[Test build #29737 has started](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/29737/consoleFull) for PR 5371 at commit [`4013a22`](https://github.com/apache/spark/commit/4013a22159246985758ffa012020bde30054c7ac).
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[GitHub] spark pull request: [SPARK-6602][Core] Update MapOutputTrackerMast...
Posted by AmplabJenkins <gi...@git.apache.org>.
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https://github.com/apache/spark/pull/5371#issuecomment-89918084
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