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MySQL Cluster 6.1 - 7.1 Release Notes  /  Changes in MySQL Cluster NDB 7.1  /  Changes in MySQL Cluster NDB 7.1.28 (5.1.70-ndb-7.1.28) (2013-09-25)

Changes in MySQL Cluster NDB 7.1.28 (5.1.70-ndb-7.1.28) (2013-09-25)

MySQL Cluster NDB 7.1.28 is a new release of MySQL Cluster, incorporating new features in the NDB storage engine and fixing recently discovered bugs in previous MySQL Cluster NDB 7.1 releases.

Obtaining MySQL Cluster NDB 7.1. The latest MySQL Cluster NDB 7.1 binaries for supported platforms can be obtained from Source code for the latest MySQL Cluster NDB 7.1 release can be obtained from the same location. You can also access the MySQL Cluster NDB 7.1 development source tree at

This release also incorporates all bugfixes and changes made in previous MySQL Cluster releases, as well as all bugfixes and feature changes which were added in mainline MySQL 5.1 through MySQL 5.1.70 (see Changes in MySQL 5.1.70 (2013-06-03)).

Functionality Added or Changed

Bugs Fixed

  • Performance: In a number of cases found in various locations in the MySQL Cluster codebase, unnecessary iterations were performed; this was caused by failing to break out of a repeating control structure after a test condition had been met. This community-contributed fix removes the unneeded repetitions by supplying the missing breaks. (Bug #16904243, Bug #69392, Bug #16904338, Bug #69394, Bug #16778417, Bug #69171, Bug #16778494, Bug #69172, Bug #16798410, Bug #69207, Bug #16801489, Bug #69215, Bug #16904266, Bug #69393)

  • File system errors occurring during a local checkpoint could sometimes cause an LCP to hang with no obvious cause when they were not handled correctly. Now in such cases, such errors always cause the node to fail. Note that the LQH block always shuts down the node when a local checkpoint fails; the change here is to make likely node failure occur more quickly and to make the original file system error more visible. (Bug #16961443)

  • The planned or unplanned shutdown of one or more data nodes while reading table data from the ndbinfo database caused a memory leak. (Bug #16932989)

  • Executing DROP TABLE while DBDIH was updating table checkpoint information subsequent to a node failure could lead to a data node failure. (Bug #16904469)

  • In certain cases, when starting a new SQL node, mysqld failed with Error 1427 Api node died, when SUB_START_REQ reached node. (Bug #16840741)

  • Failure to use container classes specific NDB during node failure handling could cause leakage of commit-ack markers, which could later lead to resource shortages or additional node crashes. (Bug #16834416)

  • Use of an uninitialized variable employed in connection with error handling in the DBLQH kernel block could sometimes lead to a data node crash or other stability issues for no apparent reason. (Bug #16834333)

  • A race condition in the time between the reception of a execNODE_FAILREP signal by the QMGR kernel block and its reception by the DBLQH and DBTC kernel blocks could lead to data node crashes during shutdown. (Bug #16834242)

  • The CLUSTERLOG command (see Commands in the MySQL Cluster Management Client) caused ndb_mgm to crash on Solaris SPARC systems. (Bug #16834030)

  • After issuing START BACKUP id WAIT STARTED, if id had already been used for a backup ID, an error caused by the duplicate ID occurred as expected, but following this, the START BACKUP command never completed. (Bug #16593604, Bug #68854)

  • ndb_mgm treated backup IDs provided to ABORT BACKUP commands as signed values, so that backup IDs greater than 231 wrapped around to negative values. This issue also affected out-of-range backup IDs, which wrapped around to negative values instead of causing errors as expected in such cases. The backup ID is now treated as an unsigned value, and ndb_mgm now performs proper range checking for backup ID values greater than MAX_BACKUPS (232). (Bug #16585497, Bug #68798)

  • When trying to specify a backup ID greater than the maximum allowed, the value was silently truncated. (Bug #16585455, Bug #68796)

  • The unexpected shutdown of another data node as a starting data node received its node ID caused the latter to hang in Start Phase 1. (Bug #16007980)

    References: See also Bug #18993037.

  • SELECT ... WHERE ... LIKE from an NDB table could return incorrect results when using engine_condition_pushdown=ON. (Bug #15923467, Bug #67724)

  • Creating more than 32 hash maps caused data nodes to fail. Usually new hashmaps are created only when performing reorganzation after data nodes have been added or when explicit partitioning is used, such as when creating a table with the MAX_ROWS option, or using PARTITION BY KEY() PARTITIONS n. (Bug #14710311)

  • When performing an INSERT ... ON DUPLICATE KEY UPDATE on an NDB table where the row to be inserted already existed and was locked by another transaction, the error message returned from the INSERT following the timeout was Transaction already aborted instead of the expected Lock wait timeout exceeded. (Bug #14065831, Bug #65130)

  • When using dynamic listening ports for accepting connections from API nodes, the port numbers were reported to the management server serially. This required a round trip for each API node, causing the time required for data nodes to connect to the management server to grow linearly with the number of API nodes. To correct this problem, each data node now reports all dynamic ports at once. (Bug #12593774)

  • Cluster API: For each log event retrieved using the MGM API, the log event category (ndb_mgm_event_category) was simply cast to an enum type, which resulted in invalid category values. Now an offset is added to the category following the cast to ensure that the value does not fall out of the allowed range.


    This change was reverted by the fix for Bug #18354165. See the MySQL Cluster API Developer documentation for ndb_logevent_get_next(), for more information.

    (Bug #16723708)

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