[ACCUMULO-240] client code for TableConfiguration has problems

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.3.5-incubating
• Fix Version/s: 1.4.2
• Component/s: client
• Assignee: Adam Fuchs
• Reporter: Adam Fuchs
• Created: 31/Dec/11 15:09
• Updated: 21/Feb/14 00:55
• Resolved: 18/Dec/12 19:28

Description

There are a number of problems with accessing TableConfiguration object from client code, the first being that TableOperationImpl uses code that relies on a hidden HDFSZooInstance in client configuration. If the client is not running with access to the HDFS Accumulo directory, or if the HDFS setup on the client differs from the Accumulo instance, then this call will fail:

Exception in thread "main" java.lang.ExceptionInInitializerError
Caused by: org.apache.accumulo.core.client.impl.HdfsZooInstance$AccumuloNotInitializedException: Accumulo not initialized, there is no instance id at /accumulo/instance_id
	at org.apache.accumulo.core.client.impl.HdfsZooInstance._getInstanceID(HdfsZooInstance.java:136)
	at org.apache.accumulo.core.client.impl.HdfsZooInstance.getInstanceID(HdfsZooInstance.java:123)
	at org.apache.accumulo.core.conf.ZooConfiguration.getInstanceId(ZooConfiguration.java:65)
	at org.apache.accumulo.core.conf.ZooConfiguration.iterator(ZooConfiguration.java:132)
	at org.apache.accumulo.core.conf.TableConfiguration.iterator(TableConfiguration.java:129)
	at org.apache.accumulo.core.conf.ConfigSanityCheck.validate(ConfigSanityCheck.java:29)
	at org.apache.accumulo.core.conf.AccumuloConfiguration.getTableConfiguration(AccumuloConfiguration.java:150)
	at org.apache.accumulo.core.client.admin.TableOperationsImpl.getProperties(TableOperationsImpl.java:544)
	at org.apache.accumulo.core.client.admin.TableOperationsImpl.setLocalityGroups(TableOperationsImpl.java:583)

Another problem is that the ZooConfiguration object uses static instance information, negating the possibility of using multiple instances in the same JVM.

Issue Links

• is duplicated by: ACCUMULO-225 Setting Locality Groups via the API throws an exception