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寫Hudi異常：'NotanAvrodatafile'解決方法

?前言

記錄寫Hudi時(shí)的一個(gè)異常的解決方法，其實(shí)這個(gè)異常從去年就發(fā)現(xiàn)并找到解決方法了，而且已經(jīng)提交到社區(qū)merge了，PR：[HUDI-2675] Fix the exception 'Not an Avro data file' when archive and clean。之所以現(xiàn)在又要總結(jié)這個(gè)異常的處理方法是因?yàn)?我們生產(chǎn)環(huán)境用的 Hudi0.9.0版本，且沒(méi)有升級(jí)，因?yàn)樯?jí)Hudi版本可能會(huì)有不兼容的問(wèn)題，需要測(cè)試，比較費(fèi)時(shí)，所以目前還沒(méi)有升級(jí)版本，而這個(gè)PR合入的版本為0.11.0，所以本文主要總結(jié)在0.9.0版本如何解決這個(gè)問(wèn)題，當(dāng)然也適用于0.11.0版本之前的其他有同樣問(wèn)題的版本。

異常信息

archive和clean時(shí)都會(huì)有這個(gè)異常，主要異常信息：

 Caused by: java.io.IOException: Not an Avro data file

異常產(chǎn)生原因

各種原因?qū)е?rollback、.clean、.clean.requested和.clean.inflight?文件大小為0，也就是空文件，而在archive和clean時(shí)無(wú)法處理空文件，就報(bào)錯(cuò)上面的異常。有一個(gè)已知原因，就是HDFS配了滿了之后會(huì)產(chǎn)生空文件，更多的是PMC也不清楚的未知原因，上面的PR中有體現(xiàn)。

解決方案

這是在不升級(jí)Hudi版本的前提下，如果可以升級(jí)Hudi版本，直接升級(jí)到Hudi最新版即可。

解決方案1

當(dāng)發(fā)生該異常時(shí)，由運(yùn)維人員刪除對(duì)應(yīng)的空文件即可，當(dāng)然這適用于表不多且異常偶發(fā)的情況，具體命令放在最后。但是當(dāng)表比較多時(shí)，運(yùn)維人員處理起來(lái)比較麻煩，這就需要第二種解決方案了。

解決方案2

基于Hudi0.9.0源碼將文章開頭提到的PR合進(jìn)去，然后install本地倉(cāng)庫(kù)或者公司自己的內(nèi)部倉(cāng)庫(kù)中，然后Maven pom依賴中引用自己的倉(cāng)庫(kù)地址就可以了?；?.9.0的代碼我已經(jīng)提交，有需要的可以自行下載，其他版本就需要大家自己合了。

  • gitee: https://gitee.com/dongkelun/hudi/tree/0.9.0-fixNotAvro/
  • github: https://github.com/dongkelun/hudi/tree/0.9.0-fixNotAvro

Hudi maven install命令:

mvn clean install -DskipTest

驗(yàn)證

直接本地運(yùn)行測(cè)試用例中的testArchiveCompletedRollbackAndClean和testCleanEmptyInstants，這倆測(cè)試用例通過(guò)了應(yīng)該就沒(méi)有問(wèn)題

方案1具體處理方法

不管是什么原因?qū)е碌漠惓?，不管用何種方式，只要確保找到正確的對(duì)應(yīng)的大小為0的空文件刪掉即可，一定不要?jiǎng)h錯(cuò)

異常信息1

ERROR [Timer-Driven Process Thread-4] o.a.hudi.table.HoodieTimelineArchiveLog Failed to archive commits, .commit file: 20220726050533.rollback
java.io.IOException: Not an Avro data file
        at org.apache.avro.file.DataFileReader.openReader(DataFileReader.java:50)
        at org.apache.hudi.common.table.timeline.TimelineMetadataUtils.deserializeAvroMetadata(TimelineMetadataUtils.java:178)
        at org.apache.hudi.client.utils.MetadataConversionUtils.createMetaWrapper(MetadataConversionUtils.java:103)
        at org.apache.hudi.table.HoodieTimelineArchiveLog.convertToAvroRecord(HoodieTimelineArchiveLog.java:341)
        at org.apache.hudi.table.HoodieTimelineArchiveLog.archive(HoodieTimelineArchiveLog.java:305)
        at org.apache.hudi.table.HoodieTimelineArchiveLog.archiveIfRequired(HoodieTimelineArchiveLog.java:128)
        at org.apache.hudi.client.AbstractHoodieWriteClient.postCommit(AbstractHoodieWriteClient.java:439)
        at org.apache.hudi.client.HoodieJavaWriteClient.postWrite(HoodieJavaWriteClient.java:187)
        at org.apache.hudi.client.HoodieJavaWriteClient.insert(HoodieJavaWriteClient.java:129)
        at org.apache.nifi.processors.javaHudi.JavaHudi.write(JavaHudi.java:523)
        at org.apache.nifi.processors.javaHudi.JavaHudi.onTrigger(JavaHudi.java:404)
        at org.apache.nifi.processor.AbstractProcessor.onTrigger(AbstractProcessor.java:27)
        at org.apache.nifi.controller.StandardProcessorNode.onTrigger(StandardProcessorNode.java:1167)
        at org.apache.nifi.controller.tasks.ConnectableTask.invoke(ConnectableTask.java:208)
        at org.apache.nifi.controller.scheduling.TimerDrivenSchedulingAgent$1.run(TimerDrivenSchedulingAgent.java:117)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
        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)

原因

.rollback文件大小為0

解決方法

在表元數(shù)據(jù)路徑下查看異常信息里的文件，確認(rèn)是否大小為0

hadoop fs -ls hdfs://cluster1/apps/hive/tenant/zxqzk_smzt_mztgx/sam_exp/.hoodie/20220726050533.rollback
0 2022-07-26 07:05 hdfs://cluster1/apps/hive/tenant/zxqzk_smzt_mztgx/sam_exp/.hoodie/20220726050533.rollback

確認(rèn)為0后，刪掉該文件即可

hadoop fs -rm -r hdfs://cluster1/apps/hive/tenant/zxqzk_smzt_mztgx/sam_exp/.hoodie/20220726050533.rollback

注意不要?jiǎng)h錯(cuò)，也可將該文件改名避免刪錯(cuò)再啟動(dòng)組件驗(yàn)證是否正常，如果還有異常，排查其他.rollback大小為0文件，一起刪掉

最好不要用grep的方式刪除，避免誤刪，只有配額不足導(dǎo)致的文件特別多的情況下才建議使用

查找所有符合條件的文件（一般只有一符合條件的文件，目前發(fā)現(xiàn)只有配額不足的情況才會(huì)有多個(gè)）

hadoop fs -ls -R  hdfs://cluster1/apps/hive/tenant/zxqzk_smzt_mztgx/sam_exp/.hoodie | grep .rollback | grep -v .rollback.inflight | awk '{ if ($5 == 0) print $8 }'

刪除所有符合條件的文件

hadoop fs -ls -R  hdfs://cluster1/apps/hive/tenant/zxqzk_smzt_mztgx/sam_exp/.hoodie | grep .rollback | grep -v .rollback.inflight | awk '{ if ($5 == 0) print $8 }'  | xargs hadoop fs -rm

異常信息2：

ERROR [Timer-Driven Process Thread-4] o.a.hudi.table.HoodieTimelineArchiveLog Failed to archive commits, .commit file: 20220726050533.rollback
java.io.IOException: Not an Avro data file
        at org.apache.avro.file.DataFileReader.openReader(DataFileReader.java:50)
        at org.apache.hudi.common.table.timeline.TimelineMetadataUtils.deserializeAvroMetadata(TimelineMetadataUtils.java:178)
        at org.apache.hudi.client.utils.MetadataConversionUtils.createMetaWrapper(MetadataConversionUtils.java:103)
        at org.apache.hudi.table.HoodieTimelineArchiveLog.convertToAvroRecord(HoodieTimelineArchiveLog.java:341)
        at org.apache.hudi.table.HoodieTimelineArchiveLog.archive(HoodieTimelineArchiveLog.java:305)
        at org.apache.hudi.table.HoodieTimelineArchiveLog.archiveIfRequired(HoodieTimelineArchiveLog.java:128)
        at org.apache.hudi.client.AbstractHoodieWriteClient.postCommit(AbstractHoodieWriteClient.java:439)
        at org.apache.hudi.client.HoodieJavaWriteClient.postWrite(HoodieJavaWriteClient.java:187)
        at org.apache.hudi.client.HoodieJavaWriteClient.insert(HoodieJavaWriteClient.java:129)
        at org.apache.nifi.processors.javaHudi.JavaHudi.write(JavaHudi.java:523)
        at org.apache.nifi.processors.javaHudi.JavaHudi.onTrigger(JavaHudi.java:404)
        at org.apache.nifi.processor.AbstractProcessor.onTrigger(AbstractProcessor.java:27)
        at org.apache.nifi.controller.StandardProcessorNode.onTrigger(StandardProcessorNode.java:1167)
        at org.apache.nifi.controller.tasks.ConnectableTask.invoke(ConnectableTask.java:208)
        at org.apache.nifi.controller.scheduling.TimerDrivenSchedulingAgent$1.run(TimerDrivenSchedulingAgent.java:117)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
        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)

異常原因

.clean文件大為0

解決方法

找到對(duì)應(yīng)表元數(shù)據(jù)路徑下.clean文件大小為0 的文件并刪除，目前遇到的情況只有一個(gè)文件且是最新的.clean文件最好不要用grep的方式刪除，避免誤刪

hadoop fs -ls hdfs://cluster1/apps/hive/tenant/zxqzk_smzt_mztgx/sam_exp/.hoodie/20220726050533.rollback
0 2022-07-26 07:05 hdfs://cluster1/apps/hive/tenant/zxqzk_smzt_mztgx/sam_exp/.hoodie/20220726050533.rollback

異常信息3：

o.a.h.t.a.clean.BaseCleanActionExecutor Failed to perform previous clean operation, instant: [==>20211011143809__clean__REQUESTED]
 org.apache.hudi.exception.HoodieIOException: Not an Avro data file
 at org.apache.hudi.table.action.clean.BaseCleanActionExecutor.runPendingClean(BaseCleanActionExecutor.java:87)
 at org.apache.hudi.table.action.clean.BaseCleanActionExecutor.lambda$execute$0(BaseCleanActionExecutor.java:137)
 at java.util.ArrayList.forEach(ArrayList.java:1257)
 at org.apache.hudi.table.action.clean.BaseCleanActionExecutor.execute(BaseCleanActionExecutor.java:134)
 at org.apache.hudi.table.HoodieJavaCopyOnWriteTable.clean(HoodieJavaCopyOnWriteTable.java:188)
 at org.apache.hudi.client.AbstractHoodieWriteClient.clean(AbstractHoodieWriteClient.java:660)
 at org.apache.hudi.client.AbstractHoodieWriteClient.clean(AbstractHoodieWriteClient.java:641)
 at org.apache.hudi.client.AbstractHoodieWriteClient.clean(AbstractHoodieWriteClient.java:672)
 at org.apache.hudi.client.AbstractHoodieWriteClient.autoCleanOnCommit(AbstractHoodieWriteClient.java:505)
 at org.apache.hudi.client.AbstractHoodieWriteClient.postCommit(AbstractHoodieWriteClient.java:440)
 at org.apache.hudi.client.HoodieJavaWriteClient.postWrite(HoodieJavaWriteClient.java:187)
 at org.apache.hudi.client.HoodieJavaWriteClient.insert(HoodieJavaWriteClient.java:129)
 at org.apache.nifi.processors.javaHudi.JavaHudi.write(JavaHudi.java:401)
 at org.apache.nifi.processors.javaHudi.JavaHudi.onTrigger(JavaHudi.java:305)
 at org.apache.nifi.processor.AbstractProcessor.onTrigger(AbstractProcessor.java:27)
 at org.apache.nifi.controller.StandardProcessorNode.onTrigger(StandardProcessorNode.java:1166)
 at org.apache.nifi.controller.tasks.ConnectableTask.invoke(ConnectableTask.java:208)
 at org.apache.nifi.controller.scheduling.TimerDrivenSchedulingAgent$1.run(TimerDrivenSchedulingAgent.java:117)
 at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
 at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
 at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
 at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
 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)
 Caused by: java.io.IOException: Not an Avro data file
 at org.apache.avro.file.DataFileReader.openReader(DataFileReader.java:50)
 at org.apache.hudi.common.table.timeline.TimelineMetadataUtils.deserializeAvroMetadata(TimelineMetadataUtils.java:178)
 at org.apache.hudi.common.util.CleanerUtils.getCleanerPlan(CleanerUtils.java:106)
 at org.apache.hudi.table.action.clean.BaseCleanActionExecutor.runPendingClean(BaseCleanActionExecutor.java:84)
 ... 24 common frames omitted

異常原因

. clean.requested?  或者 . clean.inflight 

解決方法

刪除對(duì)應(yīng)的大小為0的文件，文件名異常信息里已經(jīng)有了

最好不要用grep的方式刪除，避免誤刪，只有配額不足導(dǎo)致的文件特別多的情況下才建議使用

hadoop fs -ls -R  hdfs://cluster1/apps/hive/tenant/zxqzk_smzt_mztgx/sam_exp/.hoodie | grep .clean.requested | awk '{ if ($5 == 0) print $8 }'  | xargs hadoop fs -rm

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