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From "ASF subversion and git services (Jira)" <>
Subject [jira] [Commented] (NIFI-7117) Load Balance is not working
Date Tue, 11 Feb 2020 19:00:01 GMT


ASF subversion and git services commented on NIFI-7117:

Commit 65b2a9bc2c91657bc160fe93d6051da95ab5db34 in nifi's branch refs/heads/master from Mark
[;h=65b2a9b ]

NIFI-7117: When SocketLoadBalancedFlowFileQueue creates its array of Queue Partitions in the
constructor, it added the local partition as the first element in that list. This list should
be ordered the same across all nodes in the cluster. By making the local partition the first
in the array, each node had a different ordering of these partitions. As a result, Partition
by Attribute strategy would constantly rebalance flowfiles that it received to other node,
and Single Node always transferred data to the first partition, which was the local node,
instead of whichever node should have been the first in the list. This commit addresses this
issue by instead inserting the local partition intot he 'queuePartitions' array based on the
local node identifier.

Signed-off-by: Pierre Villard <>

This closes #4045.

> Load Balance is not working
> ---------------------------
>                 Key: NIFI-7117
>                 URL:
>             Project: Apache NiFi
>          Issue Type: Bug
>          Components: Core Framework
>    Affects Versions: 1.11.1
>            Reporter: Eduardo Mota Fontes
>            Assignee: Mark Payne
>            Priority: Blocker
>             Fix For: 1.12.0, 1.11.2
>          Time Spent: 2h
>  Remaining Estimate: 0h
> Load Balancing is not working on 1.11.1.
> I've tested with a 3 node cluster, GenerateFlowFile on All Nodes and a connection with
Single Node Load Balancing. All FlowFiles remains in its node.

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