[HDFS-16632] java.io.IOException: Version Mismatch (Expected: 28, Received: 520 )

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 3.3.0, 3.3.1, 3.2.3, 3.3.2
• Component/s: hdfs++, native
• Labels: libhdfs libhdfscpp pull-request-available

Environment

NAME="openEuler"
VERSION="20.03 (LTS-SP1)"
ID="openEuler"
VERSION_ID="20.03"

• Flags: Important
• External issue URL: https://github.com/apache/hadoop/pull/4185

Language

C++

• Assignee: Unassigned
• Reporter: cnnc
• Created: 15/Apr/22 06:32
• Updated: 21/Jul/22 03:12

Description

read 1M bytes from hdfs with libhdfspp, and the  datanode-server report an error like:

 

2022-04-12 20:10:21,872 ERROR org.apache.hadoop.hdfs.server.datanode.DataNode: server1:9866:DataXceiver error processing READ_BLOCK operation  src: /90.90.43.114:47956 dst: /90.90.43.114:9866
java.io.IOException: Version Mismatch (Expected: 28, Received: 520 )
        at org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.readOp(Receiver.java:74)
        at org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:269)
        at java.lang.Thread.run(Thread.java:748)
2022-04-12 20:13:27,615 ERROR org.apache.hadoop.hdfs.server.datanode.DataNode: server1:9866:DataXceiver error processing READ_BLOCK operation  src: /90.90.43.114:48142 dst: /90.90.43.114:9866
java.io.IOException: Version Mismatch (Expected: 28, Received: 520 )
        at org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.readOp(Receiver.java:74)
        at org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:269)
        at java.lang.Thread.run(Thread.java:748)

 

 

(1) compile test1M.cpp ,using command:

g++ test1M.cpp -lprotobuf -lhdfspp_static -lhdfs -lpthread -lsasl2 -lcrypto -llz4 -I./ -L./ -o test1M

 

(2)and execute test1M with:

./test1M  REAL_HDFS_FILE_PATH

 

(3) check hadoop logs and you will find erro info like :

java.io.IOException: Version Mismatch (Expected: 28, Received: 520 )
        at org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.readOp(Receiver.java:74)
        at org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:269)
        at java.lang.Thread.run(Thread.java:748)

 

 

 

 

Issue Links

• links to: GitHub Pull Request #4185