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From "Joseph Witt (JIRA)" <>
Subject [jira] [Created] (NIFI-1698) UI interaction very sluggish with more HDFS and HBase processors on the graph
Date Wed, 30 Mar 2016 19:32:25 GMT
Joseph Witt created NIFI-1698:

             Summary: UI interaction very sluggish with more HDFS and HBase processors on
the graph
                 Key: NIFI-1698
             Project: Apache NiFi
          Issue Type: Bug
    Affects Versions: 0.6.0
            Reporter: Joseph Witt
            Assignee: Bryan Bende
            Priority: Critical

There is a very noticeable slow-down that is more obvious on slower systems/clusters when
more and more HDFS processors exist or when more and more HBase processors exist.  If they
are enabled or running then it can cause tremendous slowdowns in response time by a multiple
of 2-10x.  This in turn leads the UI to be unresponsive.

Stacktraces such as this one are commonly present:

"Clustering Tasks Thread-3" Id=172 BLOCKED  on java.lang.Class@600aa5f8
        at org.apache.nifi.hadoop.SecurityUtil.isSecurityEnabled(
        at org.apache.nifi.hadoop.KerberosProperties.validatePrincipalAndKeytab(
        at org.apache.nifi.processors.hadoop.AbstractHadoopProcessor.customValidate(
        at org.apache.nifi.components.AbstractConfigurableComponent.validate(
        at org.apache.nifi.controller.StandardProcessorNode.isValid(
        at org.apache.nifi.controller.FlowController.getProcessorStatus(
        at org.apache.nifi.controller.FlowController.getGroupStatus(
        at org.apache.nifi.controller.FlowController.getGroupStatus(

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