Deadlock in Configuration.writeXml when serialized form is larger than one DFS
block
------------------------------------------------------------------------------------
Key: HDFS-1542
URL: https://issues.apache.org/jira/browse/HDFS-1542
Project: Hadoop HDFS
Issue Type: Bug
Components: hdfs client
Affects Versions: 0.20.2, 0.22.0, 0.23.0
Reporter: Todd Lipcon
Priority: Critical
Attachments: Test.java
Configuration.writeXml holds a lock on itself and then writes the XML to an
output stream, during which DFSOutputStream will try to get a lock on
ackQueue/dataQueue. Meanwihle the DataStreamer thread will call functions like
conf.getInt() and deadlock against the other thread, since it could be the same
conf object.
This causes a deterministic deadlock whenever the serialized form is larger
than block size.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
