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Posted to reviews@spark.apache.org by jinxing64 <gi...@git.apache.org> on 2017/06/06 06:51:20 UTC
[GitHub] spark pull request #18211: [WIP][SPARK-20994] Alleviate memory pressure in S...
GitHub user jinxing64 opened a pull request:
https://github.com/apache/spark/pull/18211
[WIP][SPARK-20994] Alleviate memory pressure in StreamManager
## What changes were proposed in this pull request?
In current code, chunks are fetched from shuffle service in two steps:
Step-1. Send `OpenBlocks`, which contains the blocks list to to fetch;
Step-2. Fetch the consecutive chunks from shuffle-service by `streamId` and `chunkIndex`
Conceptually, there is no need to send the blocks list in step-1. Client can send the blockId in Step-2. Receiving `ChunkFetchRequest`, server can check if the chunkId is in local block manager and send back response.
Thus memory cost can be improved.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/jinxing64/spark SPARK-20994
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/18211.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 #18211
----
commit 883089aa824dabfb9b82a17546a953f1f0a22be4
Author: jinxing <ji...@126.com>
Date: 2017-06-05T09:19:18Z
[SPARK-20994] Alleviate memory pressure in StreamManager
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[GitHub] spark issue #18211: [WIP][SPARK-20994] Alleviate memory pressure in StreamMa...
Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the issue:
https://github.com/apache/spark/pull/18211
**[Test build #77790 has finished](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/77790/testReport)** for PR 18211 at commit [`31070fc`](https://github.com/apache/spark/commit/31070fc4905f3f9e08e10ced09051ecace22eeab).
* This patch passes all tests.
* This patch merges cleanly.
* This patch adds no public classes.
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[GitHub] spark issue #18211: [SPARK-20994] Alleviate memory pressure in StreamManager
Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the issue:
https://github.com/apache/spark/pull/18211
**[Test build #77790 has started](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/77790/testReport)** for PR 18211 at commit [`31070fc`](https://github.com/apache/spark/commit/31070fc4905f3f9e08e10ced09051ecace22eeab).
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[GitHub] spark issue #18211: [SPARK-20994] Alleviate memory pressure in StreamManager
Posted by jinxing64 <gi...@git.apache.org>.
Github user jinxing64 commented on the issue:
https://github.com/apache/spark/pull/18211
Jenkins, retest this please.
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[GitHub] spark issue #18211: [WIP][SPARK-20994] Alleviate memory pressure in StreamMa...
Posted by AmplabJenkins <gi...@git.apache.org>.
Github user AmplabJenkins commented on the issue:
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[GitHub] spark issue #18211: [SPARK-20994] Alleviate memory pressure in StreamManager
Posted by vanzin <gi...@git.apache.org>.
Github user vanzin commented on the issue:
https://github.com/apache/spark/pull/18211
If I read correctly, you're changing the wire protocol, aren't you?
That's bad. It means a new Spark cannot talk to an old shuffle service. We can't force people to upgrade the shuffle service just to use a new Spark version - that's part of the infrastructure and may require downtime of other services such as YARN.
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[GitHub] spark issue #18211: [WIP][SPARK-20994] Alleviate memory pressure in StreamMa...
Posted by jinxing64 <gi...@git.apache.org>.
Github user jinxing64 commented on the issue:
https://github.com/apache/spark/pull/18211
@vanzin
Thanks a lot for comment. I will close this pr and think if there is other solution.
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[GitHub] spark issue #18211: [WIP][SPARK-20994] Alleviate memory pressure in StreamMa...
Posted by jinxing64 <gi...@git.apache.org>.
Github user jinxing64 commented on the issue:
https://github.com/apache/spark/pull/18211
In this pr:
1. Instead of `chunkIndex`, fetch chunk by `String chunkId`. Server doesn't cache the blocks list.
2. In `OpenBlocks`, only metadata(e.g. appId, executorId) of the stream is send. Thus client doesn't need to send the metadata in following fetching.
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Github user SparkQA commented on the issue:
https://github.com/apache/spark/pull/18211
**[Test build #77768 has finished](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/77768/testReport)** for PR 18211 at commit [`a2f105e`](https://github.com/apache/spark/commit/a2f105e3741249f563006d8589a362a09c21c42b).
* This patch passes all tests.
* This patch merges cleanly.
* This patch adds no public classes.
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[GitHub] spark issue #18211: [WIP][SPARK-20994] Alleviate memory pressure in StreamMa...
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https://github.com/apache/spark/pull/18211
**[Test build #77769 has finished](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/77769/testReport)** for PR 18211 at commit [`d44d08b`](https://github.com/apache/spark/commit/d44d08b92a92e45fa1871a812233cfd462710939).
* This patch **fails PySpark unit tests**.
* This patch merges cleanly.
* This patch adds no public classes.
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https://github.com/apache/spark/pull/18211
**[Test build #77768 has started](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/77768/testReport)** for PR 18211 at commit [`a2f105e`](https://github.com/apache/spark/commit/a2f105e3741249f563006d8589a362a09c21c42b).
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[GitHub] spark pull request #18211: [WIP][SPARK-20994] Alleviate memory pressure in S...
Posted by jinxing64 <gi...@git.apache.org>.
Github user jinxing64 commented on a diff in the pull request:
https://github.com/apache/spark/pull/18211#discussion_r120388659
--- Diff: common/network-common/src/test/java/org/apache/spark/network/server/OneForOneStreamManagerSuite.java ---
@@ -1,50 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.apache.spark.network.server;
-
-import java.util.ArrayList;
-import java.util.List;
-
-import io.netty.channel.Channel;
-import org.junit.Test;
-import org.mockito.Mockito;
-
-import org.apache.spark.network.TestManagedBuffer;
-import org.apache.spark.network.buffer.ManagedBuffer;
-
-public class OneForOneStreamManagerSuite {
-
- @Test
- public void managedBuffersAreFeedWhenConnectionIsClosed() throws Exception {
- OneForOneStreamManager manager = new OneForOneStreamManager();
- List<ManagedBuffer> buffers = new ArrayList<>();
- TestManagedBuffer buffer1 = Mockito.spy(new TestManagedBuffer(10));
- TestManagedBuffer buffer2 = Mockito.spy(new TestManagedBuffer(20));
- buffers.add(buffer1);
- buffers.add(buffer2);
- long streamId = manager.registerStream("appId", buffers.iterator());
-
- Channel dummyChannel = Mockito.mock(Channel.class, Mockito.RETURNS_SMART_NULLS);
- manager.registerChannel(dummyChannel, streamId);
-
- manager.connectionTerminated(dummyChannel);
-
- Mockito.verify(buffer1, Mockito.times(1)).release();
- Mockito.verify(buffer2, Mockito.times(1)).release();
- }
-}
--- End diff --
Remove this test. Because `ManagedBuffer` are initialized only when it is being fetched. There is no remaining `ManagedBuffer` when the connection is closed.
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[GitHub] spark issue #18211: [WIP][SPARK-20994] Alleviate memory pressure in StreamMa...
Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the issue:
https://github.com/apache/spark/pull/18211
**[Test build #77769 has started](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/77769/testReport)** for PR 18211 at commit [`d44d08b`](https://github.com/apache/spark/commit/d44d08b92a92e45fa1871a812233cfd462710939).
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[GitHub] spark issue #18211: [WIP][SPARK-20994] Alleviate memory pressure in StreamMa...
Posted by jinxing64 <gi...@git.apache.org>.
Github user jinxing64 commented on the issue:
https://github.com/apache/spark/pull/18211
In my cluster, we are suffering from OOM of shuffle-service.
We found that a lot of executors are fetching blocks from a single shuffle-service. Analyzing the memory, we found that the blockIds(shuffle_shuffleId_mapId_reduceId) takes about 1.5GBytes.
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[GitHub] spark pull request #18211: [WIP][SPARK-20994] Alleviate memory pressure in S...
Posted by jinxing64 <gi...@git.apache.org>.
Github user jinxing64 closed the pull request at:
https://github.com/apache/spark/pull/18211
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[GitHub] spark issue #18211: [WIP][SPARK-20994] Alleviate memory pressure in StreamMa...
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Github user SparkQA commented on the issue:
https://github.com/apache/spark/pull/18211
**[Test build #77778 has started](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/77778/testReport)** for PR 18211 at commit [`31070fc`](https://github.com/apache/spark/commit/31070fc4905f3f9e08e10ced09051ecace22eeab).
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[GitHub] spark issue #18211: [WIP][SPARK-20994] Alleviate memory pressure in StreamMa...
Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the issue:
https://github.com/apache/spark/pull/18211
**[Test build #77767 has started](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/77767/testReport)** for PR 18211 at commit [`883089a`](https://github.com/apache/spark/commit/883089aa824dabfb9b82a17546a953f1f0a22be4).
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[GitHub] spark issue #18211: [SPARK-20994] Alleviate memory pressure in StreamManager
Posted by AmplabJenkins <gi...@git.apache.org>.
Github user AmplabJenkins commented on the issue:
https://github.com/apache/spark/pull/18211
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[GitHub] spark issue #18211: [SPARK-20994] Alleviate memory pressure in StreamManager
Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the issue:
https://github.com/apache/spark/pull/18211
**[Test build #77778 has finished](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/77778/testReport)** for PR 18211 at commit [`31070fc`](https://github.com/apache/spark/commit/31070fc4905f3f9e08e10ced09051ecace22eeab).
* This patch **fails from timeout after a configured wait of \`250m\`**.
* This patch merges cleanly.
* This patch adds no public classes.
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