DataNode: Cannot start secure cluster without privileged resources |
tags/release-0.20.205.0-rc2
-------------------------------------------------------------------------------------------------
Key: HADOOP-7750
URL: https://issues.apache.org/jira/browse/HADOOP-7750
Project: Hadoop Common
Issue Type: Bug
Affects Versions: 0.20.205.1
Environment: Linux RHEL5 64bit
sunjava2 1.6.0r14
http://svn.apache.org/repos/asf/hadoop/common/tags/release-0.20.205.0-rc2/branch-0.20-security-205/src/hdfs/org/apache/hadoop/hdfs/server/datanode/DataNode.java
Reporter: Trevor Powell
This tag compiles just fine. But after configuring it, the datanode fails on
startup with the below error:
TARTUP_MSG: Starting DataNode
STARTUP_MSG: host = hd3w94m7/10.152.94.111
STARTUP_MSG: args = []
STARTUP_MSG: version = 0.20.205.1
STARTUP_MSG: build =
http://svn.apache.org/repos/asf/hadoop/common/tags/release-0.20.205.0-rc2 -r
1179942; compiled by 'tpowell1' on Wed Oct 12 11:14:46 PDT 2011
************************************************************/
2011-10-14 15:24:56,028 INFO org.apache.hadoop.metrics2.impl.MetricsConfig:
loaded properties from hadoop-metrics2.properties
2011-10-14 15:24:56,043 INFO
org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: MBean for source
MetricsSystem,sub=Stats registered.
2011-10-14 15:24:56,044 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl:
Scheduled snapshot period at 10 second(s).
2011-10-14 15:24:56,044 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl:
DataNode metrics system started
2011-10-14 15:24:56,192 INFO
org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: MBean for source ugi
registered.
2011-10-14 15:24:56,421 INFO org.apache.hadoop.security.UserGroupInformation:
Asked the TGT renewer thread to terminate
2011-10-14 15:24:57,241 INFO org.apache.hadoop.security.UserGroupInformation:
Login successful for user hdfs/hd3w94m7@XXX using keytab file
/home/tpowell1/hadoop.tags.release-0.20.205.0-rc2/conf/hdfs.keytab
2011-10-14 15:24:57,242 ERROR org.apache.hadoop.hdfs.server.datanode.DataNode:
java.lang.RuntimeException: Cannot start secure cluster without privileged
resources.
at
org.apache.hadoop.hdfs.server.datanode.DataNode.startDataNode(DataNode.java:306)
at
org.apache.hadoop.hdfs.server.datanode.DataNode.<init>(DataNode.java:281)
at
org.apache.hadoop.hdfs.server.datanode.DataNode.makeInstance(DataNode.java:1545)
at
org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:1484)
at
org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:1502)
at
org.apache.hadoop.hdfs.server.datanode.DataNode.secureMain(DataNode.java:1628)
at
org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:1645)
2011-10-14 15:24:57,243 INFO org.apache.hadoop.hdfs.server.datanode.DataNode:
SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down DataNode at hd3w94m7.XXX/10.152.94.111
************************************************************/
Checking the Datanode.java code it is started with a null SecureResources .
public static void main(String args[]) {
secureMain(args, null);
}
This null resource seems to get passed all the way down to startDataNode()
where there is a null check... which in turns throws the error we see.
void startDataNode(Configuration conf,
AbstractList<File> dataDirs, SecureResources resources
) throws IOException {
if(UserGroupInformation.isSecurityEnabled() && resources == null)
throw new RuntimeException("Cannot start secure cluster without " +
"privileged resources.");
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