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https://issues.apache.org/jira/browse/HDFS-15050?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Xiaoqiao He updated HDFS-15050:
-------------------------------
Attachment: HDFS-15050.001.patch
Status: Patch Available (was: Open)
submit init patch with minor exception changes.
> Optimize log information when DFSInputStream meet
> CannotObtainBlockLengthException
> ----------------------------------------------------------------------------------
>
> Key: HDFS-15050
> URL: https://issues.apache.org/jira/browse/HDFS-15050
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: dfsclient
> Reporter: Xiaoqiao He
> Assignee: Xiaoqiao He
> Priority: Major
> Attachments: HDFS-15050.001.patch
>
>
> We could not identify which file it belongs easily when DFSInputStream meet
> CannotObtainBlockLengthException, as the following exception log. Just
> suggest to log file path string when we meet CannotObtainBlockLengthException.
> {code:java}
> Caused by: java.io.IOException: Cannot obtain block length for
> LocatedBlock{BP-***:blk_***_***; getBlockSize()=690504; corrupt=false;
> offset=1811939328;
> locs=[DatanodeInfoWithStorage[*:50010,DS-2bcadcc4-458a-45c6-a91b-8461bf7cdd71,DISK],
>
> DatanodeInfoWithStorage[*:50010,DS-8f2bb259-ecb2-4839-8769-4a0523360d58,DISK],
>
> DatanodeInfoWithStorage[*:50010,DS-69f4de6f-2428-42ff-9486-98c2544b1ada,DISK]]}
> at
> org.apache.hadoop.hdfs.DFSInputStream.readBlockLength(DFSInputStream.java:402)
> at
> org.apache.hadoop.hdfs.DFSInputStream.fetchLocatedBlocksAndGetLastBlockLength(DFSInputStream.java:345)
> at
> org.apache.hadoop.hdfs.DFSInputStream.openInfo(DFSInputStream.java:280)
> at org.apache.hadoop.hdfs.DFSInputStream.<init>(DFSInputStream.java:272)
> at org.apache.hadoop.hdfs.DFSClient.open(DFSClient.java:1664)
> at
> org.apache.hadoop.hdfs.DistributedFileSystem$3.doCall(DistributedFileSystem.java:304)
> at
> org.apache.hadoop.hdfs.DistributedFileSystem$3.doCall(DistributedFileSystem.java:300)
> at
> org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
> at
> org.apache.hadoop.hdfs.DistributedFileSystem.open(DistributedFileSystem.java:300)
> at org.apache.hadoop.fs.FilterFileSystem.open(FilterFileSystem.java:161)
> at
> org.apache.hadoop.fs.viewfs.ChRootedFileSystem.open(ChRootedFileSystem.java:266)
> at
> org.apache.hadoop.fs.viewfs.ViewFileSystem.open(ViewFileSystem.java:481)
> at org.apache.hadoop.fs.FileSystem.open(FileSystem.java:828)
> at
> org.apache.hadoop.mapred.LineRecordReader.<init>(LineRecordReader.java:109)
> at
> org.apache.hadoop.mapred.TextInputFormat.getRecordReader(TextInputFormat.java:67)
> at
> org.apache.hadoop.hive.ql.io.CombineHiveRecordReader.<init>(CombineHiveRecordReader.java:65)
> ... 16 more
> {code}
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