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https://issues.apache.org/jira/browse/HDFS-15085?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Ayush Saxena reopened HDFS-15085:
---------------------------------
> Erasure Coding: some ORC data can not be recovery when partial DataNodes
> are shut down
> ----------------------------------------------------------------------------------------
>
> Key: HDFS-15085
> URL: https://issues.apache.org/jira/browse/HDFS-15085
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: ec
> Affects Versions: 3.1.0
> Reporter: zhangbutao
> Priority: Major
> Attachments: orcfile
>
>
> Test environment: hadoop version 3.1.0, 5 datanode
> step to repo:
> 1: Set the ec policy RS-3-2-1024k on all of hdfs paths:
> hdfs ec -setPolicy -path / RS-3-2-1024k
> 2.Put the small orc file into hdfs on host which is running datanode dn1:
> hdfs dfs -put orcfile /tmp/testec/
> 3.Shut down the datanode dn1, and execute the following command to verify the
> orc data:
> hive --orcfiledump /tmp/testec/orcfile
> 4. The error log should be output on the client side:
> {code:java}
> Exception in thread "main" org.apache.hadoop.HadoopIllegalArgumentException:
> Invalid buffer, not of length 974814
> at
> org.apache.hadoop.io.erasurecode.rawcoder.ByteBufferDecodingState.checkOutputBuffers(ByteBufferDecodingState.java:138)
> at
> org.apache.hadoop.io.erasurecode.rawcoder.ByteBufferDecodingState.<init>(ByteBufferDecodingState.java:48)
> at
> org.apache.hadoop.io.erasurecode.rawcoder.RawErasureDecoder.decode(RawErasureDecoder.java:86)
> at
> org.apache.hadoop.io.erasurecode.rawcoder.RawErasureDecoder.decode(RawErasureDecoder.java:170)
> at
> org.apache.hadoop.hdfs.StripeReader.decodeAndFillBuffer(StripeReader.java:423)
> at
> org.apache.hadoop.hdfs.PositionStripeReader.decode(PositionStripeReader.java:74)
> at
> org.apache.hadoop.hdfs.StripeReader.readStripe(StripeReader.java:382)
> at
> org.apache.hadoop.hdfs.DFSStripedInputStream.fetchBlockByteRange(DFSStripedInputStream.java:479)
> at
> org.apache.hadoop.hdfs.DFSInputStream.pread(DFSInputStream.java:1442)
> at
> org.apache.hadoop.hdfs.DFSInputStream.read(DFSInputStream.java:1400)
> at
> org.apache.hadoop.fs.FSInputStream.readFully(FSInputStream.java:121)
> at
> org.apache.hadoop.fs.FSDataInputStream.readFully(FSDataInputStream.java:111)
> at
> org.apache.orc.impl.RecordReaderUtils.readDiskRanges(RecordReaderUtils.java:557)
> at
> org.apache.orc.impl.RecordReaderUtils$DefaultDataReader.readFileData(RecordReaderUtils.java:276)
> at
> org.apache.orc.impl.RecordReaderImpl.readAllDataStreams(RecordReaderImpl.java:1099)
> at
> org.apache.orc.impl.RecordReaderImpl.readStripe(RecordReaderImpl.java:1055)
> at
> org.apache.orc.impl.RecordReaderImpl.advanceStripe(RecordReaderImpl.java:1208)
> at
> org.apache.orc.impl.RecordReaderImpl.advanceToNextRow(RecordReaderImpl.java:1243)
> at
> org.apache.orc.impl.RecordReaderImpl.<init>(RecordReaderImpl.java:273)
> at org.apache.orc.impl.ReaderImpl.rows(ReaderImpl.java:633)
> at org.apache.orc.impl.ReaderImpl.rows(ReaderImpl.java:627)
> at org.apache.orc.tools.FileDump.printMetaDataImpl(FileDump.java:309)
> at org.apache.orc.tools.FileDump.printMetaData(FileDump.java:274)
> at org.apache.orc.tools.FileDump.main(FileDump.java:135)
> at org.apache.orc.tools.FileDump.main(FileDump.java:142)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at org.apache.hadoop.util.RunJar.run(RunJar.java:308)
> at org.apache.hadoop.util.RunJar.main(RunJar.java:222)
> {code}
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