My Oracle Support Banner

Both NameNodes in Standby Mode: ZooKeeper SyncLimit Set Too Low (Doc ID 2888541.1)

Last updated on JULY 20, 2024

Applies to:

Big Data Appliance Integrated Software - Version 4.13.0 and later
Information in this document applies to any platform.

Symptoms

Both NameNodes for Big Data Appliance go into standby mode.  One may see the following:

NameNode summary: <BDA_NAMENODE_HOST_1> (Availability: Standby, Health: Good), <BDA_NAMENODE_HOST_2>; (Availability: Standby, Health: Good). 
This health test is bad because the Service Monitor did not find an active NameNode.

Additionally, TCP retransmission was observed in the connections to ZooKeeper Server, suggesting network congestion.

Changes

 N/A

Cause

To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!

In this Document
Symptoms
Changes
Cause
Solution
References


My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.