HDFS-17456. Fix the incorrect dfsused statistics of datanode when appending a file. by fuchaohong · Pull Request #6713 · apache/hadoop

fuchaohong · 2024-04-07T06:46:42Z

JIRA: HDFS-17456.
The effect of this patch is that when the replica is moved from the finalized directory to the rbw directory, dfsused will subtract the replica length.

… file.

ZanderXu

LGTM. Maybe we can use replicaInfo.getNumBytes()

ZanderXu

LGTM.

@fuchaohong please describe this case in the Description window, thanks.

fuchaohong · 2024-04-07T09:25:09Z

@ZanderXu done the describe, thanks.

hadoop-yetus · 2024-04-07T13:14:58Z

🎊 +1 overall

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		386m 56s

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hadoop-yetus · 2024-04-07T14:15:21Z

🎊 +1 overall

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		368m 13s

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versions	git=2.25.1 maven=3.6.3 spotbugs=4.2.2
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hadoop-yetus · 2024-04-24T05:49:10Z

🎊 +1 overall

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		423m 56s

Subsystem	Report/Notes
GITHUB PR	#6713
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Console output	https://ci-hadoop.apache.org/job/hadoop-multibranch-windows-10/job/PR-6713/1/console
versions	git=2.44.0.windows.1
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Hexiaoqiao · 2024-04-29T03:58:41Z

@fuchaohong Hi, IIUC the dfsused will be refreshed periodically. Do you meet any issues about this metric? Thanks.

fuchaohong · 2024-04-29T06:32:45Z

@fuchaohong Hi, IIUC the dfsused will be refreshed periodically. Do you meet any issues about this metric? Thanks.
@Hexiaoqiao Indeed, the dfsused metric is corrected periodically, but the cycle is very long. Currently, when there are too many append operations, dfsused may expand abnormally, not reflecting the actual usage accurately. Thanks.

Hexiaoqiao

Got it. Make sense to me. +1.

Hexiaoqiao · 2024-04-30T04:23:09Z

Committed to trunk. Thanks @fuchaohong and @ZanderXu !

…ending a file. (apache#6713). Contributed by fuchaohong. Reviewed-by: ZanderXu <zanderxu@apache.org> Signed-off-by: He Xiaoqiao <hexiaoqiao@apache.org>

Fix the dfsused statistics of datanode are incorrect when appending a…

bce57ed

… file.

github-actions Bot added HDFS trunk labels Apr 7, 2024

fuchaohong changed the title ~~Fix the dfsused statistics of datanode are incorrect when appending a file.~~ HDFS-17456. Fix the dfsused statistics of datanode are incorrect when appending a file. Apr 7, 2024

ZanderXu reviewed Apr 7, 2024

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Comment thread ...p-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsVolumeImpl.java Outdated

Update FsVolumeImpl.java

ecf2c6a

ZanderXu reviewed Apr 7, 2024

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ZanderXu approved these changes Apr 7, 2024

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Hexiaoqiao approved these changes Apr 29, 2024

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Hexiaoqiao changed the title ~~HDFS-17456. Fix the dfsused statistics of datanode are incorrect when appending a file.~~ HDFS-17456. Fix the incorrect dfsused statistics of datanode when appending a file. Apr 30, 2024

Hexiaoqiao merged commit 0c9e0b4 into apache:trunk Apr 30, 2024

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HDFS-17456. Fix the incorrect dfsused statistics of datanode when appending a file.#6713

HDFS-17456. Fix the incorrect dfsused statistics of datanode when appending a file.#6713
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fuchaohong commented Apr 7, 2024 •

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fuchaohong commented Apr 7, 2024 •

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