[jira] [Commented] (NIFI-1698) UI interaction very sluggish with more HDFS and HBase processors on the graph

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/NIFI-1698?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15224202#comment-15224202 ] 

ASF GitHub Bot commented on NIFI-1698:
--------------------------------------

Github user asfgit closed the pull request at:

    https://github.com/apache/nifi/pull/313


> UI interaction very sluggish with more HDFS and HBase processors on the graph
> -----------------------------------------------------------------------------
>
>                 Key: NIFI-1698
>                 URL: https://issues.apache.org/jira/browse/NIFI-1698
>             Project: Apache NiFi
>          Issue Type: Bug
>    Affects Versions: 0.6.0
>            Reporter: Joseph Witt
>            Assignee: Bryan Bende
>            Priority: Critical
>             Fix For: 0.7.0, 0.6.1
>
>
> 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:
> {quote}
> "Clustering Tasks Thread-3" Id=172 BLOCKED  on java.lang.Class@600aa5f8
>         at org.apache.nifi.hadoop.SecurityUtil.isSecurityEnabled(SecurityUtil.java:83)
>         at org.apache.nifi.hadoop.KerberosProperties.validatePrincipalAndKeytab(KerberosProperties.java:121)
>         at org.apache.nifi.processors.hadoop.AbstractHadoopProcessor.customValidate(AbstractHadoopProcessor.java:154)
>         at org.apache.nifi.components.AbstractConfigurableComponent.validate(AbstractConfigurableComponent.java:123)
>         at org.apache.nifi.controller.StandardProcessorNode.isValid(StandardProcessorNode.java:912)
>         at org.apache.nifi.controller.FlowController.getProcessorStatus(FlowController.java:2529)
>         at org.apache.nifi.controller.FlowController.getGroupStatus(FlowController.java:2146)
>         at org.apache.nifi.controller.FlowController.getGroupStatus(FlowController.java:2162)
> {quote}



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