This document lists the new features, enhancements, fixed issues and, removed or deprecated features for Hazelcast IMDG 4.1.z releases. The numbers in the square brackets refer to the issues in Hazelcast's GitHub repositories.
To decrease the load on the Management Center for large clusters, the level of network related metrics has been changed to DEBUG. When you need these metrics, you can use the hazelcast.metrics.debug.enabled property. #21260
Fixes
Fixed an issue where replication over WAN was failing on the source cluster members, when there are multiple batch publishers configured in a single WAN replication. #22498
Fixed an issue where the cluster was failing to operate since the indexes on backup partitions were removed by map.ClearBackupOperation. #22305
Fixed an issue where a cluster could not be formed when security is enabled, various client permissions are set, and multiple members are started simultaneously. #21507
Fixed an issue where a cluster was unresponsive when you perform a health check to see the members are in the safe state; cluster members were hanging in the REPLICA_NOT_SYNC state during such health checks. #21205
Fixed an issue where the list of members in the cluster was reset to an empty list when member IDs change after a cluster restart: this was causing startup failures since Hazelcast could not manage the events due to the empty member list after a restart. #21181
Fixed an issue where the statistics like puts and removals were not increasing when these operations are executed through Transactional interface. #21100
Fixed an issue where Hazelcast clients, which have only the IP address of a member to connect (but the member also has a hostname), were not able to connect to the cluster. #20632
==== 4.1.8 ====
For the distributions packages of IMDG, we updated the vulnerable version of log4j2 in Management Center to 2.17.0. No changes were made to the IMDG code.
==== 4.1.7 ====
For the distributions packages of IMDG, we updated the vulnerable version of log4j2 in Management Center to 2.15.0. No changes were made to the IMDG code.
==== 4.1.6 ====
Enhancements
Improved the log message that is displayed when using the hazelcast.io.selectorMode property to decrease the high CPU usage. The previous misleading message read as "Recreated Selector because of possible java/network stack bug". It has been changed to "Selector was rebuilt, consider updating Java and/or your network stack drivers". #19761
Introduced the hazelcast.internal.map.expired.key.scan.timeout.nanos property to limit the execution time of the cleanup operations, i.e., entry expiration tasks of a map; this is to prevent the increased CPU usage as the partition size grows. #19663
Fixes
Hazelcast was executing cluster wide operations when you query the state of a member using the health check endpoint - it was causing to kill all the members in a cluster; this issue has been fixed. #19837
The increment command (incr) in the Memcache client was returning the ASCII code of the expected result; this interpretation issue has been fixed. #19681
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Bumps hazelcast from 4.1.8 to 4.1.10.
Release notes
Sourced from hazelcast's releases.
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Commits
c2b1293Upgrade version to 4.1.109555e6fPrepare release 4.1.1066cfca2Adding OS 4.1.10 release notes along with that of all 4.1.z series. (#22823)4847c2eHandle null values of AddMapConfigMessageTask's nullable fields (#22821)3c1b70eConvert HotRestartTriggerBackupMessageTask and ShutdownClusterMessageTask to ...11aace9Upgrade jackson to 2.14.0 [4.1.z] (#22393)767ef01Fixed ClearBackupOperation [HZ-1210], BACKPORT (#22305)2672dc7Queue priority test fix [HZ-1096] (#21268)9685c0fFix non-finalized items in wan queue [HZ-1502] [4.1.z] (#22437) (#22498)c1e9ae5Fix Throwable.initCause when exception already has cause [4.1.z] API-1387 (#2...Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting
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