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Datanode Is Down Unable To Bring Up In NDB Cluster (Doc ID 2814634.1)

Last updated on JULY 10, 2023

Applies to:

MySQL Cluster - Version 7.5 and later
Information in this document applies to any platform.

Symptoms

On : 7.5 version, Replication

Datanode is down unable to bring up in NDB cluster

 

ERROR
-----------------------
/export/home2/pb2/build/sb_1-33647974-1555166981.65/rpm/BUILD/mysql-cluster-com-7.5.14/mysql-cluster-com-7.5.14/storage/ndb/src/kernel/vm/mt.cpp:7871: require((selfptr != __null)) failed
2021-09-22 16:42:29 [ndbd] INFO -- Received signal 6. Running error handler.
/export/home2/pb2/build/sb_1-33647974-1555166981.65/rpm/BUILD/mysql-cluster-com-7.5.14/mysql-cluster-com-7.5.14/storage/ndb/src/kernel/vm/mt.cpp:7871: require((selfptr != __null)) failed




STEPS
-----------------------
The issue can be reproduced at will with the following steps:
1. High disk io activity
2. LCP watchdog attempts a shutdown and leaves defunct process
3. Attempt to restart, but fails due to memory allocation issues

BUSINESS IMPACT
-----------------------
The issue has the following business impact:
Due to this issue, users cannot restart the data node.

Cause

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In this Document
Symptoms
Cause
Solution


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