[HDFS-12392] Writing striped file failed due to different cell size

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.0-alpha3
• Fix Version/s: 3.0.0-beta1
• Component/s: erasure-coding
• Labels: hdfs-ec-3.0-must-do
• Target Version/s: 3.0.0-beta1
• Hadoop Flags: Reviewed
• Assignee: Sammi Chen
• Reporter: Sammi Chen
• Created: 05/Sep/17 03:09
• Updated: 24/Apr/18 20:55
• Resolved: 06/Sep/17 05:37

Description

Root cause: The buffer size returned by ElasticByteBufferPool.getBuffer() is more than caller expected.

Exception stack:
org.apache.hadoop.HadoopIllegalArgumentException: Invalid buffer, not of length 4096

at org.apache.hadoop.io.erasurecode.rawcoder.ByteBufferEncodingState.checkBuffers(ByteBufferEncodingState.java:99)
at org.apache.hadoop.io.erasurecode.rawcoder.ByteBufferEncodingState.<init>(ByteBufferEncodingState.java:46)
at org.apache.hadoop.io.erasurecode.rawcoder.RawErasureEncoder.encode(RawErasureEncoder.java:67)
at org.apache.hadoop.hdfs.DFSStripedOutputStream.encode(DFSStripedOutputStream.java:368)
at org.apache.hadoop.hdfs.DFSStripedOutputStream.writeParityCells(DFSStripedOutputStream.java:942)
at org.apache.hadoop.hdfs.DFSStripedOutputStream.writeChunk(DFSStripedOutputStream.java:547)
at org.apache.hadoop.fs.FSOutputSummer.writeChecksumChunks(FSOutputSummer.java:217)
at org.apache.hadoop.fs.FSOutputSummer.write1(FSOutputSummer.java:125)
at org.apache.hadoop.fs.FSOutputSummer.write(FSOutputSummer.java:111)
at org.apache.hadoop.fs.FSDataOutputStream$PositionCache.write(FSDataOutputStream.java:57)
at java.io.DataOutputStream.write(DataOutputStream.java:107)
at org.apache.hadoop.io.IOUtils.copyBytes(IOUtils.java:94)
at org.apache.hadoop.hdfs.DFSTestUtil.writeFile(DFSTestUtil.java:834)