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From "ASF subversion and git services (JIRA)" <>
Subject [jira] [Commented] (NIFI-1698) UI interaction very sluggish with more HDFS and HBase processors on the graph
Date Mon, 04 Apr 2016 14:16:25 GMT


ASF subversion and git services commented on NIFI-1698:

Commit 1badf698160b9717e8eeab527682dbccb26e6c9e in nifi's branch refs/heads/support/nifi-0.6.x
from [~bbende]
[;h=1badf69 ]

NIFI-1698 Improving customValidate in AbstractHadoopProcessor and HBaseClient service to not
reload Configuration unless it changed. This closes #313

Signed-off-by: Matt Gilman <>

> UI interaction very sluggish with more HDFS and HBase processors on the graph
> -----------------------------------------------------------------------------
>                 Key: NIFI-1698
>                 URL:
>             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(
>         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(
> {quote}

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