Mubarak Seyed created FLUME-1370:
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Summary: HDFSEventSink - file name collision in bucket path
Key: FLUME-1370
URL: https://issues.apache.org/jira/browse/FLUME-1370
Project: Flume
Issue Type: Bug
Components: Sinks+Sources
Affects Versions: v1.2.0
Environment: Linux, Java 1.6.0.24, hadoop-0.20.205, flume-1.2.0
Reporter: Mubarak Seyed
It appears from test that two HDFS sinks (from different agent/machines) are
trying to create same file name
{code}
2012-07-12 22:18:51,820 WARN org.apache.hadoop.hdfs.StateChange: DIR*
NameSystem.startFile: failed to create file
/logs/event1/07122012/22/2/Event1.1342130410188.tmp for DFSClient_-1690064085
on client 0.0.0.1, because this file is already being created by
DFSClient_1581651201 on 0.0.0.2
2012-07-12 22:18:51,820 INFO org.apache.hadoop.ipc.Server: IPC Server handler 8
on 8020, call create(/logs/event1/07122012/22/2/Event1.1342130410188.tmp,
rwxr-xr-x, DFSClient_-1690064085, true, 3, 134217728) from 0.0.0.1:54280:
error: org.apache.hadoop.hdfs.protocol.AlreadyBeingCreatedException: failed to
create file /logs/event1/07122012/22/2/Event1.1342130410188.tmp for
DFSClient_-1690064085 on client 0.0.0.1, because this file is already being
created by DFSClient_1581651201 on 0.0.0.2
org.apache.hadoop.hdfs.protocol.AlreadyBeingCreatedException: failed to create
file /logs/event1/07122012/22/2/Event1.1342130410188.tmp for
DFSClient_-1690064085 on client 0.0.0.1, because this file is already being
created by DFSClient_1581651201 on 0.0.0.2
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.recoverLeaseInternal(FSNamesystem.java:1338)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.startFileInternal(FSNamesystem.java:1178)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.startFile(FSNamesystem.java:1126)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.create(NameNode.java:585)
at sun.reflect.GeneratedMethodAccessor15.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:557)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1434)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1430)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:396)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1127)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1428)
{code}
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