ZanderXu created HDFS-16764:
-------------------------------
Summary: ObserverNamenode handles addBlock rpc and throws a
FileNotFoundException
Key: HDFS-16764
URL: https://issues.apache.org/jira/browse/HDFS-16764
Project: Hadoop HDFS
Issue Type: Bug
Reporter: ZanderXu
Assignee: ZanderXu
ObserverNameNode currently can handle the addBlockLocation RPC, but it may
throw a FileNotFoundException when it contains stale txid.
* AddBlock is not a coordinated method, so Observer will not check the statId.
* AddBlock does the validation with checkOperation(OperationCategory.READ)
So the observer can handle the addBlock rpc. If this observer cannot replay the
edit of create file, it will throw a FileNotFoundException during doing
validation.
The related code as follows:
{code:java}
checkOperation(OperationCategory.READ);
final FSPermissionChecker pc = getPermissionChecker();
FSPermissionChecker.setOperationType(operationName);
readLock();
try {
checkOperation(OperationCategory.READ);
r = FSDirWriteFileOp.validateAddBlock(this, pc, src, fileId, clientName,
previous, onRetryBlock);
} finally {
readUnlock(operationName);
} {code}
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
