Íñigo Goiri created HDFS-13410:
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Summary: RBF: Support federation with no subclusters
Key: HDFS-13410
URL: https://issues.apache.org/jira/browse/HDFS-13410
Project: Hadoop HDFS
Issue Type: Sub-task
Reporter: Íñigo Goiri
Assignee: Íñigo Goiri
If the federation has no subclusters the logs have long stack traces. Even
though this is not a regular setup for RBF, we should trigger log message.
An example:
{code}
Caused by: java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
at java.util.LinkedList.checkElementIndex(LinkedList.java:555)
at java.util.LinkedList.get(LinkedList.java:476)
at
org.apache.hadoop.hdfs.server.federation.router.RouterRpcClient.invokeConcurrent(RouterRpcClient.java:1028)
at
org.apache.hadoop.hdfs.server.federation.router.RouterRpcServer.getDatanodeReport(RouterRpcServer.java:1264)
at
org.apache.hadoop.hdfs.server.federation.metrics.FederationMetrics.getNodeUsage(FederationMetrics.java:424)
{code}
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