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MySQL Cluster Manager 1.4.4 has been released
Posted by: Sreedhar S
Date: October 04, 2017 11:09PM

Dear MySQL Users,

MySQL Cluster Manager 1.4.4 has been released and can be downloaded
from the My Oracle Support (MOS) website. It will also be available
on Oracle Software Delivery Cloud at http://edelivery.oracle.com with
the next monthly update

MySQL Cluster Manager is an optional component of the MySQL Cluster Carrier
Grade Edition, providing a command-line interface that automates common
management tasks, including the following online operations:
 - Configuring and starting MySQL Cluster
 - Upgrades
 - Adding and removing cluster nodes
 - Adding and removing site hosts
 - Configuration changes
 - Backup and restore

MySQL Cluster Manager is a commercial extension to the MySQL family of products.
More details can be found at http://www.mysql.com/products/cluster/mcm/

A brief summary of changes in MySQL Cluster Manager version 1.4.4 is listed below:

Changes in MySQL Cluster Manager 1.4.4      (2017-10-05)

   This section documents all changes and bug fixes that have
   been applied in MySQL Cluster Manager 1.4.4 since the release
   of MySQL Cluster Manager version 1.4.3.


   Functionality Added or Changed

     * Agent: On Windows platforms, when the collect logs
       command was run and the resulting file path for any of
       the collected files was longer than 255 characters, the
       command failed with ERROR 101 (00MGR) Access denied. A
       new type of error, PATH_TOO_LONG (106) Path max length
       exceeded for file filename, has been added and is now
       returned at the situation. (Bug #26619163)

   Bugs Fixed

     * Agent: On Solaris platforms, the collect logs command
       created lots of zombie threads after it finished. It was
       because a number of thread joins were missing in the
       code, which have been added by this fix. (Bug #26665347)

     * Agent: For a large NDB Cluster site, the collect logs
       command frequently failed due to errors with the network
       connections during file transfers. This was because some
       error codes related to the network connections were not
       properly handled, and this fix corrects that. (Bug
       #26642616)

     * Agent: The import config command sometimes failed, as the
       mcmd agent updated its configuration store before all the
       values to be imported arrived. This fix makes mcmd wait
       for all the values before starting the updates. (Bug
       #26610874)

     * Agent: The collect logs command reported success even
       when an agent failed and the file transfer from it was
       incomplete. With this fix, when connection to an agent
       fails, the command allows running file transfers to
       complete, and then throws an error. (Bug #26594948)

     * Agent: The collect logs command sometimes failed with
       ERROR 1003 Internal error: No clients connected, even
       though clients were connecting and files were being
       transferred. That was due to a faulty mechanism for
       tracking client connections, which has been corrected by
       this fix. (Bug #26575768)

     * Agent: The mcm client hung when running the collect logs
       command if the host names for the cluster nodes could not
       be resolved, even if the cluster was actually defined
       using IP addresses. (Bug #26564176)

     * Agent: A start cluster command timed out when its timeout
       value, being scaled for handling a large DataMemory size
       for a cluster, was accidentally reset. This fix makes
       sure the timeout for the execution step of a start
       cluster command is never lowered while the data nodes are
       starting. (Bug #26543383)

     * Agent: After a node had failed and an update process
       command on it also failed, a stop cluster or stop process
       command that followed ran into an assertion error. It was
       because the node, automatically restarted after its
       failure, had its PID file modified by the update process
       command that was still running. This fix adds a check on
       the status of the target process for the update process
       command to prevent the restarted node's PID file from
       being modified. (Bug #26388603)

     * Agent: The collect logs command hung for 30 seconds after
       completing all file transfers before returning the
       success message. (Bug #26362910)

     * Agent: When a management node's status went from starting
       to stopped, it was not reported by its mcmd agent,
       causing commands like delete cluster to fail because the
       management node was taken to be still running. (Bug
       #26288009)

On behalf of the Oracle MySQL RE Team
~Sreedhar S


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