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https://issues.apache.org/jira/browse/FLUME-3392?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17606390#comment-17606390
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PaulZeng commented on FLUME-3392:
---------------------------------
Maybe you would improve the program. Try to commit to kafka during the cannal
take action commit.
> kafka channel flume hdfs file close failed cause retry and data losse
> ---------------------------------------------------------------------
>
> Key: FLUME-3392
> URL: https://issues.apache.org/jira/browse/FLUME-3392
> Project: Flume
> Issue Type: Bug
> Affects Versions: 1.9.0
> Environment: flume 1.9.0
> kafka channel
> hdfs sink
> Reporter: Xinyuan Liu
> Priority: Blocker
>
>
> Due to the failure of hdfs BucketWriter close file and unlimited retries, the
> pressure of nenode is too high, and data may be lost due to subsequent
> successful consumption and offset submission.
> {code:java}
> 2021-05-30 02:33:45,045 (hdfs-s1-roll-timer-0) [WARN -
> org.apache.flume.sink.hdfs.BucketWriter$CloseHandler.close(BucketWriter.java:348)]
> Closing file:
> hdfs://10.1.53.19:9020/warehouse/ods_flume_json_yunc_transcation/ods_flume_json_thirdparty_db__t_note_phone/datelabel=20210530/__t_note_phonet_note_phone.1622312610822.json.tmp
> failed. Will retry again in 180 seconds.2021-05-30 02:33:45,045
> (hdfs-s1-roll-timer-0) [WARN -
> org.apache.flume.sink.hdfs.BucketWriter$CloseHandler.close(BucketWriter.java:348)]
> Closing file:
> hdfs://x.x.x.x:9020/warehouse/ods_flume_json_yunc_transcation/ods_flume_json_thirdparty_db__t_note_phone/datelabel=20210530/__t_note_phonet_note_phone.1622312610822.json.tmp
> failed. Will retry again in 180 seconds.java.io.IOException: Unable to close
> file because the last block
> BP-1006090754-10.1.53.214-1490513887497:blk_6365012859_5293069088 does not
> have enough number of replicas. at
> org.apache.hadoop.hdfs.DFSOutputStream.completeFile(DFSOutputStream.java:2865)
> at
> org.apache.hadoop.hdfs.DFSOutputStream.completeFile(DFSOutputStream.java:2810)
> at
> org.apache.hadoop.hdfs.DFSOutputStream.closeImpl(DFSOutputStream.java:2794)
> at org.apache.hadoop.hdfs.DFSOutputStream.close(DFSOutputStream.java:2737) at
> org.apache.hadoop.fs.FSDataOutputStream$PositionCache.close(FSDataOutputStream.java:72)
> at
> org.apache.hadoop.fs.FSDataOutputStream.close(FSDataOutputStream.java:106) at
> org.apache.flume.sink.hdfs.HDFSDataStream.close(HDFSDataStream.java:135) at
> org.apache.flume.sink.hdfs.BucketWriter$3.call(BucketWriter.java:319) at
> org.apache.flume.sink.hdfs.BucketWriter$3.call(BucketWriter.java:316) at
> org.apache.flume.sink.hdfs.BucketWriter$8$1.run(BucketWriter.java:727) at
> org.apache.flume.auth.SimpleAuthenticator.execute(SimpleAuthenticator.java:50)
> at org.apache.flume.sink.hdfs.BucketWriter$8.call(BucketWriter.java:724) at
> java.util.concurrent.FutureTask.run(FutureTask.java:266) at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)2021-05-30 02:33:45,062
> (hdfs-s1-call-runner-12) [INFO -
> org.apache.flume.sink.hdfs.BucketWriter$7.call(BucketWriter.java:681)]
> Renaming
> hdfs://10.1.53.19:9020/warehouse/ods_flume_json_yunc_transcation/ods_flume_json_thirdparty_db__t_note_phone/datelabel=20210530/__t_note_phonet_note_phone.1622312610822.json.tmp
> to
> hdfs://10.1.53.19:9020/warehouse/ods_flume_json_yunc_transcation/ods_flume_json_thirdparty_db__t_note_phone/datelabel=20210530/t_note_phone.1622312610822.json2021-05-30
> 02:34:04,157 (SinkRunner-PollingRunner-DefaultSinkProcessor) [INFO -
> org.apache.flume.sink.hdfs.HDFSDataStream.configure(HDFSDataStream.java:57)]
> Serializer = TEXT, UseRawLocalFileSystem = false2021-05-30 02:34:04,181
> (SinkRunner-PollingRunner-DefaultSinkProcessor) [INFO -
> org.apache.flume.sink.hdfs.BucketWriter.open(BucketWriter.java:246)] Creating
> hdfs://10.1.53.19:9020/warehouse/ods_flume_json_yunc_transcation/ods_flume_json_thirdparty_db__t_note_phone/datelabel=20210530/__t_note_phonet_note_phone.1622313244158.json.tmp2021-05-30
> 02:36:45,047 (hdfs-s1-call-runner-2) [ERROR -
> org.apache.flume.sink.hdfs.AbstractHDFSWriter.hflushOrSync(AbstractHDFSWriter.java:269)]
> Error while trying to hflushOrSync!2021-05-30 02:36:45,048
> (hdfs-s1-roll-timer-0) [WARN -
> org.apache.flume.sink.hdfs.BucketWriter$CloseHandler.close(BucketWriter.java:348)]
> Closing file:
> hdfs://10.1.53.19:9020/warehouse/ods_flume_json_yunc_transcation/ods_flume_json_thirdparty_db__t_note_phone/datelabel=20210530/__t_note_phonet_note_phone.1622312610822.json.tmp
> failed. Will retry again in 180
> seconds.java.nio.channels.ClosedChannelException at
> org.apache.hadoop.hdfs.DFSOutputStream.checkClosed(DFSOutputStream.java:2039)
> at
> org.apache.hadoop.hdfs.DFSOutputStream.flushOrSync(DFSOutputStream.java:2461)
> at org.apache.hadoop.hdfs.DFSOutputStream.hflush(DFSOutputStream.java:2395)
> at
> org.apache.hadoop.fs.FSDataOutputStream.hflush(FSDataOutputStream.java:138)
> at sun.reflect.GeneratedMethodAccessor21.invoke(Unknown Source) at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498) at
> org.apache.flume.sink.hdfs.AbstractHDFSWriter.hflushOrSync(AbstractHDFSWriter.java:266)
> at org.apache.flume.sink.hdfs.HDFSDataStream.close(HDFSDataStream.java:134)
> at org.apache.flume.sink.hdfs.BucketWriter$3.call(BucketWriter.java:319) at
> org.apache.flume.sink.hdfs.BucketWriter$3.call(BucketWriter.java:316) at
> org.apache.flume.sink.hdfs.BucketWriter$8$1.run(BucketWriter.java:727) at
> org.apache.flume.auth.SimpleAuthenticator.execute(SimpleAuthenticator.java:50)
> at org.apache.flume.sink.hdfs.BucketWriter$8.call(BucketWriter.java:724) at
> java.util.concurrent.FutureTask.run(FutureTask.java:266) at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> {code}
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