HDDS-6842. [Ozone-Streaming] Reduce the number of watch requests in StreamCommitWatcher. #3492

szetszwo · 2022-06-08T05:21:04Z

See https://issues.apache.org/jira/browse/HDDS-6842

captainzmc

Thanks @szetszwo for optimization, this a good point. Had we tested how much performance this improves?

szetszwo · 2022-06-08T11:58:18Z

@captainzmc , I was mainly testing writing a single 1GB file. Before this improvement, Async took ~6s but Streaming took ~9s in my setup. After this Streaming is about the same as Async.

szetszwo · 2022-06-08T12:02:43Z

@captainzmc , BTW, I moved some of the changes to #3493 so that we can merge it directly to the master branch.

captainzmc · 2022-06-08T12:40:20Z

@captainzmc , BTW, I moved some of the changes to #3493 so that we can merge it directly to the master branch.

OK, Let's start with #3493.

…cher.

szetszwo · 2022-06-09T03:12:15Z

Will run some benchmark again in order to verify the improvement.

szetszwo · 2022-06-09T20:18:14Z

@captainzmc , just have verified that the performance of Stream and Async are about the same for writing a single 1GB file. Please review this. Thanks.

szetszwo · 2022-06-09T20:25:54Z

STREAM[1 x 1g]

2022-06-09 20:10:50 INFO  Print:53 - STREAM[1 x 1g]: ELAPSED: 4962ms (4.962496S)
2022-06-09 20:11:49 INFO  Print:53 - STREAM[1 x 1g]: ELAPSED: 5289ms (5.289901S)
2022-06-09 20:12:35 INFO  Print:53 - STREAM[1 x 1g]: ELAPSED: 5354ms (5.354376S)
2022-06-09 20:13:59 INFO  Print:53 - STREAM[1 x 1g]: ELAPSED: 5257ms (5.257939S)
2022-06-09 20:14:39 INFO  Print:53 - STREAM[1 x 1g]: ELAPSED: 4844ms (4.844022S)

ASYNC[1 x 1g]

2022-06-09 20:15:04 INFO  Print:53 - ASYNC[1 x 1g]: ELAPSED: 5208ms (5.208552S)
2022-06-09 20:16:04 INFO  Print:53 - ASYNC[1 x 1g]: ELAPSED: 4805ms (4.805783S)
2022-06-09 20:16:24 INFO  Print:53 - ASYNC[1 x 1g]: ELAPSED: 5201ms (5.201009S)
2022-06-09 20:17:13 INFO  Print:53 - ASYNC[1 x 1g]: ELAPSED: 5105ms (5.105652S)

captainzmc

Thanks @szetszwo for the update. The change looks good. I'm +1.
CI has some errors. However, these errors are not caused by this PR, they are caused by the previous Rebase. I think it's ok to fix these errors in this PR or a new PR.

szetszwo · 2022-06-10T06:38:32Z

@captainzmc , thanks a lot for reviewing this.

CI has some errors. However, these errors are not caused by this PR, ...

Let's fix it separately. Do you know how to fix it?

captainzmc · 2022-06-10T06:42:45Z

Let's fix it separately. Do you know how to fix it?

Let me try to fix these.

szetszwo · 2022-06-22T18:04:17Z

@captainzmc , tried some single client benchmarks. Streaming is obvious better than Async after this and the related fixes.

ASYNC[100 x 128m]

2022-06-22 17:55:26 INFO  Print:53 - ASYNC[100 x 128m]: ELAPSED: 36789ms (36.789253S)
2022-06-22 17:57:06 INFO  Print:53 - ASYNC[100 x 128m]: ELAPSED: 34980ms (34.980303S)
2022-06-22 17:52:30 INFO  Print:53 - ASYNC[100 x 128m]: ELAPSED: 40386ms (40.386711S)

STREAM[100 x 128m]

2022-06-22 17:50:15 INFO  Print:53 - STREAM[100 x 128m]: ELAPSED: 15367ms (15.367493S)
2022-06-22 17:50:58 INFO  Print:53 - STREAM[100 x 128m]: ELAPSED: 22082ms (22.082032S)
2022-06-22 17:51:33 INFO  Print:53 - STREAM[100 x 128m]: ELAPSED: 20748ms (20.748417S)

ASYNC[10 x 1g]

2022-06-22 16:03:12 INFO  Print:53 - ASYNC[10 x 1g]: ELAPSED: 41268ms (41.268702S)
2022-06-22 16:04:31 INFO  Print:53 - ASYNC[10 x 1g]: ELAPSED: 42623ms (42.623741S)
2022-06-22 16:06:12 INFO  Print:53 - ASYNC[10 x 1g]: ELAPSED: 39027ms (39.027346S)

STREAM[10 x 1g]

2022-06-22 16:01:19 INFO  Print:53 - STREAM[10 x 1g]: ELAPSED: 20486ms (20.486308S)
2022-06-22 16:07:34 INFO  Print:53 - STREAM[10 x 1g]: ELAPSED: 26253ms (26.253218S)
2022-06-22 16:08:35 INFO  Print:53 - STREAM[10 x 1g]: ELAPSED: 19151ms (19.151242S)

szetszwo · 2022-06-22T20:25:26Z

200x128m_ASYNC

2022-06-22 20:09:58 INFO  Print:58 - 200x128m_ASYNC_c8m_t32: ELAPSED: 50301ms (50.301573S)
2022-06-22 20:11:32 INFO  Print:58 - 200x128m_ASYNC_c8m_t32: ELAPSED: 49688ms (49.688644S)
2022-06-22 20:12:53 INFO  Print:58 - 200x128m_ASYNC_c8m_t32: ELAPSED: 50884ms (50.884893S)
2022-06-22 20:15:28 INFO  Print:58 - 200x128m_ASYNC_c8m_t64: ELAPSED: 49258ms (49.258734S)

200x128m_STREAM

2022-06-22 20:01:26 INFO  Print:58 - 200x128m_STREAM_c8m_t32: ELAPSED: 28995ms (28.995231S)
2022-06-22 20:02:58 INFO  Print:58 - 200x128m_STREAM_c8m_t32: ELAPSED: 22288ms (22.288911S)
2022-06-22 20:04:11 INFO  Print:58 - 200x128m_STREAM_c8m_t32: ELAPSED: 26967ms (26.967777S)
2022-06-22 20:22:01 INFO  Print:58 - 200x128m_STREAM_c8m_t64: ELAPSED: 28768ms (28.768423S)

Note that c8m means 8mb chunk size. t32 means 32 client threads.
Note also that using more client threads (t64) does not help.

szetszwo · 2022-06-22T21:10:25Z

400x128m_ASYNC

2022-06-22 20:39:41 INFO  Print:58 - 400x128m_ASYNC_c8m_t32: ELAPSED: 96096ms (1M36.096616S)
2022-06-22 20:42:02 INFO  Print:58 - 400x128m_ASYNC_c8m_t32: ELAPSED: 91303ms (1M31.30335S)
2022-06-22 20:45:00 INFO  Print:58 - 400x128m_ASYNC_c8m_t32: ELAPSED: 91450ms (1M31.450918S)
2022-06-22 20:47:41 INFO  Print:58 - 400x128m_ASYNC_c8m_t32: ELAPSED: 93955ms (1M33.955319S)

2022-06-22 20:53:07 INFO  Print:58 - 400x128m_ASYNC_c1m_t32: ELAPSED: 95263ms (1M35.263701S)

400x128m_STREAM

2022-06-22 20:33:59 INFO  Print:58 - 400x128m_STREAM_c8m_t32: ELAPSED: 45900ms (45.900112S)
2022-06-22 20:35:48 INFO  Print:58 - 400x128m_STREAM_c8m_t32: ELAPSED: 48339ms (48.33955S)
2022-06-22 20:37:21 INFO  Print:58 - 400x128m_STREAM_c8m_t32: ELAPSED: 48380ms (48.380559S)
2022-06-22 21:03:29 INFO  Print:58 - 400x128m_STREAM_c8m_t32: ELAPSED: 45124ms (45.124395S)

2022-06-22 20:59:01 INFO  Print:58 - 400x128m_STREAM_c1m_t32: ELAPSED: 68551ms (1M8.55105S)

When using 1mb chunk size (c1m), the Async performance is about the same as 8mb chunk size but the Stream is much slower.

captainzmc · 2022-06-23T06:51:56Z

Thanks @szetszwo for the test, the streaming performance is very good from the test results, which can meet our expectations. It seems that the chunk size setting is important.

szetszwo · 2022-06-23T19:38:31Z

@captainzmc , Stream is faster than Async by more than a double below.

800x128m_ASYNC

2022-06-23 19:18:56 INFO  Print:58 - 800x128m_ASYNC_c8m_t32: ELAPSED: 192891ms (3M12.891844S)
2022-06-23 19:24:07 INFO  Print:58 - 800x128m_ASYNC_c8m_t32: ELAPSED: 198278ms (3M18.278792S)
2022-06-23 19:30:04 INFO  Print:58 - 800x128m_ASYNC_c8m_t32: ELAPSED: 201877ms (3M21.877562S)

800x128m_STREAM

2022-06-23 19:13:49 INFO  Print:58 - 800x128m_STREAM_c8m_t32: ELAPSED: 70130ms (1M10.130834S)
2022-06-23 19:32:59 INFO  Print:58 - 800x128m_STREAM_c8m_t32: ELAPSED: 77290ms (1M17.290496S)
2022-06-23 19:35:38 INFO  Print:58 - 800x128m_STREAM_c8m_t32: ELAPSED: 77012ms (1M17.012314S)

szetszwo · 2022-06-23T22:32:16Z

@captainzmc , just have done some 3-client benchmarks. Stream is around 3 times faster than Async.

3clients_200x128m_ASYNC: client07

2022-06-23 21:20:06 INFO  Print:55 - 3clients_200x128m_ASYNC_c8m_t32: ELAPSED: 142303ms (2M22.303595S)
2022-06-23 21:23:37 INFO  Print:55 - 3clients_200x128m_ASYNC_c8m_t32: ELAPSED: 145289ms (2M25.28923S)
2022-06-23 21:28:52 INFO  Print:55 - 3clients_200x128m_ASYNC_c8m_t32: ELAPSED: 153096ms (2M33.096604S)

3clients_200x128m_STREAM: client07

2022-06-23 21:07:02 INFO  Print:55 - 3clients_200x128m_STREAM_c8m_t32: ELAPSED: 41521ms (41.521613S)
2022-06-23 21:11:45 INFO  Print:55 - 3clients_200x128m_STREAM_c8m_t32: ELAPSED: 41287ms (41.287784S)
2022-06-23 21:14:54 INFO  Print:55 - 3clients_200x128m_STREAM_c8m_t32: ELAPSED: 40074ms (40.074274S)

szetszwo · 2022-06-23T22:33:14Z

3clients_200x128m_ASYNC: client08

2022-06-23 21:20:06 INFO  Print:55 - 3clients_200x128m_ASYNC_c8m_t32: ELAPSED: 142551ms (2M22.551907S)
2022-06-23 21:23:37 INFO  Print:55 - 3clients_200x128m_ASYNC_c8m_t32: ELAPSED: 145216ms (2M25.216375S)
2022-06-23 21:28:51 INFO  Print:55 - 3clients_200x128m_ASYNC_c8m_t32: ELAPSED: 152550ms (2M32.550649S)

3clients_200x128m_STREAM: client08

2022-06-23 21:07:04 INFO  Print:55 - 3clients_200x128m_STREAM_c8m_t32: ELAPSED: 42897ms (42.897611S)
2022-06-23 21:11:45 INFO  Print:55 - 3clients_200x128m_STREAM_c8m_t32: ELAPSED: 41408ms (41.408407S)
2022-06-23 21:14:54 INFO  Print:55 - 3clients_200x128m_STREAM_c8m_t32: ELAPSED: 40609ms (40.609904S)

szetszwo · 2022-06-23T22:34:13Z

3clients_200x128m_ASYNC: client09

2022-06-23 21:20:06 INFO  Print:55 - 3clients_200x128m_ASYNC_c8m_t32: ELAPSED: 142575ms (2M22.575039S)
2022-06-23 21:23:37 INFO  Print:55 - 3clients_200x128m_ASYNC_c8m_t32: ELAPSED: 145177ms (2M25.177483S)
2022-06-23 21:28:52 INFO  Print:55 - 3clients_200x128m_ASYNC_c8m_t32: ELAPSED: 152991ms (2M32.991775S)

3clients_200x128m_STREAM: client09

2022-06-23 21:07:04 INFO  Print:55 - 3clients_200x128m_STREAM_c8m_t32: ELAPSED: 43379ms (43.379795S)
2022-06-23 21:11:46 INFO  Print:55 - 3clients_200x128m_STREAM_c8m_t32: ELAPSED: 42202ms (42.202172S)
2022-06-23 21:14:55 INFO  Print:55 - 3clients_200x128m_STREAM_c8m_t32: ELAPSED: 40797ms (40.797086S)

szetszwo · 2022-06-24T00:49:34Z

3clients_100x128m_ASYNC: client07

2022-06-23 20:54:00 INFO  Print:58 - 3clients_100x128m_ASYNC_c8m_t32: ELAPSED: 72512ms (1M12.512979S)
2022-06-23 20:58:30 INFO  Print:55 - 3clients_100x128m_ASYNC_c8m_t32: ELAPSED: 75618ms (1M15.618221S)
2022-06-23 21:00:44 INFO  Print:55 - 3clients_100x128m_ASYNC_c8m_t32: ELAPSED: 74064ms (1M14.064084S)

3clients_100x128m_STREAM: client07

2022-06-23 20:49:58 INFO  Print:58 - 3clients_100x128m_STREAM_c8m_t32: ELAPSED: 22595ms (22.595777S)
2022-06-23 21:01:58 INFO  Print:55 - 3clients_100x128m_STREAM_c8m_t32: ELAPSED: 21445ms (21.445989S)
2022-06-23 21:03:58 INFO  Print:55 - 3clients_100x128m_STREAM_c8m_t32: ELAPSED: 22386ms (22.386376S)

3clients_100x128m_ASYNC: client08

2022-06-23 20:54:00 INFO  Print:58 - 3clients_100x128m_ASYNC_c8m_t32: ELAPSED: 72532ms (1M12.53237S)
2022-06-23 20:58:30 INFO  Print:55 - 3clients_100x128m_ASYNC_c8m_t32: ELAPSED: 75601ms (1M15.601691S)
2022-06-23 21:00:42 INFO  Print:55 - 3clients_100x128m_ASYNC_c8m_t32: ELAPSED: 72436ms (1M12.436445S)

3clients_100x128m_STREAM: client08

2022-06-23 20:49:58 INFO  Print:58 - 3clients_100x128m_STREAM_c8m_t32: ELAPSED: 22727ms (22.72737S)
2022-06-23 21:01:58 INFO  Print:55 - 3clients_100x128m_STREAM_c8m_t32: ELAPSED: 21757ms (21.757868S)
2022-06-23 21:03:58 INFO  Print:55 - 3clients_100x128m_STREAM_c8m_t32: ELAPSED: 22581ms (22.581229S)

3clients_100x128m_ASYNC: client09

2022-06-23 20:54:00 INFO  Print:58 - 3clients_100x128m_ASYNC_c8m_t32: ELAPSED: 72004ms (1M12.004621S)
2022-06-23 20:58:30 INFO  Print:55 - 3clients_100x128m_ASYNC_c8m_t32: ELAPSED: 75607ms (1M15.607768S)
2022-06-23 21:00:42 INFO  Print:55 - 3clients_100x128m_ASYNC_c8m_t32: ELAPSED: 72097ms (1M12.097986S)

3clients_100x128m_STREAM: client09

2022-06-23 20:49:58 INFO  Print:58 - 3clients_100x128m_STREAM_c8m_t32: ELAPSED: 22666ms (22.666303S)
2022-06-23 21:02:01 INFO  Print:55 - 3clients_100x128m_STREAM_c8m_t32: ELAPSED: 24922ms (24.922359S)
2022-06-23 21:03:58 INFO  Print:55 - 3clients_100x128m_STREAM_c8m_t32: ELAPSED: 22948ms (22.948317S)

captainzmc · 2022-06-24T02:59:06Z

Thanks @szetszwo，Great progress！We will no longer worry about streaming being challenged when merging master. I and @guohao-rosicky will continue the development of HDDS-5869 in order to complete streaming functionality as soon as possible.

captainzmc · 2022-06-24T03:23:50Z

Hi @szetszwo, Apart from chunk size, is there any other change of the streaming configuration?

szetszwo · 2022-06-24T19:11:00Z

@captainzmc , this is the benchmark program https://github.com/szetszwo/ozone-benchmark which is forked for your program and this is the conf https://github.com/szetszwo/ozone-benchmark/blob/master/benchmark-conf.xml

szetszwo · 2022-06-24T19:15:21Z

cd $BENCHMARK_HOME
export CLASSPATH=`mvn -s $MVN_SETTINGS exec:exec | grep ${PWD}/`

OM=...
CLIENTS=...
BENCHMARK_ID=`hostname`
TYPE=STREAM
FILE_NUM=200
FILE_SIZE=128m
CHUNK_SIZE=8m
THREAD_NUM=32

DATETIME=`date +%Y%m%d-%H%M`; \
F=output-3clients_${FILE_NUM}x${FILE_SIZE}_${TYPE}_c${CHUNK_SIZE}_t${THREAD_NUM}_${DATETIME}.txt; \
  java -Xms64g -Xmx64g org.apache.hadoop.ozone.benchmark.Benchmark \
  -om ${OM} -localDirs ${LOCAL_ROOT}/benchmark-dir/ \
  -verify \
  -type ${TYPE} -id ${BENCHMARK_ID} -threadNum ${THREAD_NUM} \
  -fileNum ${FILE_NUM} -fileSize ${FILE_SIZE} -chunkSize ${CHUNK_SIZE} \
  -clients ${CLIENTS} \
  | tee ${F}

szetszwo · 2022-06-24T19:19:14Z

TYPE could be ASYNC, STREAM_API_MAPPED_BYTE_BUFFER or STREAM_API_BYTE_ARRAY.

TYPE=STREAM will use STREAM_API_MAPPED_BYTE_BUFFER.

captainzmc · 2022-06-27T02:41:02Z

Thanks @szetszwo . These are useful. Later we can collate these test data and the test process so that others can understand the streaming performance.

…treamCommitWatcher. (apache#3492)

…treamCommitWatcher. (#3492) (cherry picked from commit 8315f08) (cherry picked from commit 4c064f42aaa027baa0ca0c7ed373a143a26a6cec)

…treamCommitWatcher. (#3492) (cherry picked from commit 8315f08) (cherry picked from commit 4c064f42aaa027baa0ca0c7ed373a143a26a6cec) (cherry picked from commit a5980ce)

…treamCommitWatcher. (#3492) (cherry picked from commit 317053d)

…treamCommitWatcher. (apache#3492) (cherry picked from commit 317053d)

* master: (88 commits) HDDS-7463. SCM Pipeline scrubber never able to cleanup allocated pipeline. (apache#4093) HDDS-7683. EC: ReplicationManager - UnderRep maintenance handler should not request nodes if none needed (apache#4109) HDDS-7635. Update failure metrics when allocate block fails in preExecute. (apache#4086) HDDS-7565. FSO purge directory for old bucket can update quota for new bucket (apache#4021) HDDS-7654. EC: ReplicationManager - merge mis-rep queue into under replicated queue (apache#4099) HDDS-7621. Update SCM term in datanode from heartbeat without any commands (apache#4101) HDDS-7649. S3 multipart upload EC release space quota wrong for old version (apache#4095) HDDS-7399. Enable specifying external root ca (apache#4053) HDDS-7398. Tool to remove old certs from the scm db (apache#3972) HDDS-6650. S3MultipartUpload support update bucket usedNamespace. (apache#4081) HDDS-7605. Improve logging in Container Balancer (apache#4067) HDDS-7616. EC: Refactor Unhealthy Replicated Processor (apache#4063) HDDS-7426. Add a new acceptance test for Streaming Pipeline. (apache#4019) HDDS-7478. [Ozone-Streaming] NPE in when creating a file with o3fs. (apache#3949) HDDS-7425. Add documentation for the new Streaming Pipeline feature. (apache#3913) HDDS-7438. [Ozone-Streaming] Add a createStreamKey method to OzoneBucket. (apache#3914) HDDS-7431. [Ozone-Streaming] Disable data steam by default. (apache#3900) HDDS-6955. [Ozone-streaming] Add explicit stream flag in ozone shell (apache#3559) HDDS-6867. [Ozone-Streaming] PutKeyHandler should not use streaming to put EC key. (apache#3516) HDDS-6842. [Ozone-Streaming] Reduce the number of watch requests in StreamCommitWatcher. (apache#3492) ...

captainzmc reviewed Jun 8, 2022

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szetszwo changed the title ~~HDDS-6842. [Ozone-Streaming] Reduce watch requests in StreamCommitWatcher.~~ HDDS-6842. [Ozone-Streaming] Reduce the number of watch requests in StreamCommitWatcher. Jun 8, 2022

szetszwo force-pushed the HDDS-4454 branch from 185a28c to 19b8f37 Compare June 9, 2022 03:05

HDDS-6842. [Ozone-Streaming] Reduce watch requests in StreamCommitWat…

fcac0ba

…cher.

szetszwo force-pushed the HDDS-6842 branch from e3e8073 to fcac0ba Compare June 9, 2022 03:11

szetszwo added 2 commits June 8, 2022 22:07

Fix checkstyle in OzoneClientKeyGenerator.

5784644

Fix findbugs in AbstractDataStreamOutput.

37aca63

captainzmc approved these changes Jun 10, 2022

View reviewed changes

szetszwo merged commit cabc517 into apache:HDDS-4454 Jun 10, 2022

captainzmc pushed a commit to captainzmc/hadoop-ozone that referenced this pull request Jul 4, 2022

HDDS-6842. [Ozone-Streaming] Reduce the number of watch requests in S…

8315f08

…treamCommitWatcher. (apache#3492)

szetszwo added a commit that referenced this pull request Oct 25, 2022

HDDS-6842. [Ozone-Streaming] Reduce the number of watch requests in S…

a5980ce

…treamCommitWatcher. (#3492) (cherry picked from commit 8315f08) (cherry picked from commit 4c064f42aaa027baa0ca0c7ed373a143a26a6cec)

szetszwo added a commit that referenced this pull request Dec 1, 2022

HDDS-6842. [Ozone-Streaming] Reduce the number of watch requests in S…

7e10a2c

…treamCommitWatcher. (#3492) (cherry picked from commit 317053d)

szetszwo added a commit that referenced this pull request Dec 16, 2022

HDDS-6842. [Ozone-Streaming] Reduce the number of watch requests in S…

45954da

…treamCommitWatcher. (#3492) (cherry picked from commit 317053d)

nishitpatira pushed a commit to nishitpatira/ozone that referenced this pull request Dec 16, 2022

HDDS-6842. [Ozone-Streaming] Reduce the number of watch requests in S…

d361354

…treamCommitWatcher. (apache#3492) (cherry picked from commit 317053d)

HDDS-6842. [Ozone-Streaming] Reduce the number of watch requests in StreamCommitWatcher. #3492

HDDS-6842. [Ozone-Streaming] Reduce the number of watch requests in StreamCommitWatcher. #3492

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