[RELEASE] Apache Cassandra 4.0.3 released
The Cassandra team is pleased to announce the release of Apache Cassandra version 4.0.3. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source and binary distributions are listed in our download section: http://cassandra.apache.org/download/ This version is a bug fix release[1] on the 4.0 series. As always, please pay attention to the release notes[2] and Let us know[3] if you were to encounter any problem. Enjoy! [1]: CHANGES.txt https://gitbox.apache.org/repos/asf?p=cassandra.git;a=blob_plain;f=CHANGES.txt;hb=refs/tags/cassandra-4.0.3 [2]: NEWS.txt https://gitbox.apache.org/repos/asf?p=cassandra.git;a=blob_plain;f=NEWS.txt;hb=refs/tags/cassandra-4.0.3 [3]: https://issues.apache.org/jira/browse/CASSANDRA
Re: Continuous hints getting generated even when nodes are Up
Cassandra 3.0.9 is a very old version, many bugs have been discovered and fixed since then. You really should consider upgrading to the latest version (3.0.26 / 3.11 / 4.0). Write failures (such as timeout) can generate hints even when all nodes are up. You should check the logs and metrics to make sure writes were not failing. Tombstone won't directly cause nodes creating hints, but the side effect of too many tombstones, such as long GC pauses, may cause it. I'm not sure where does the "Unknown column during serialization" come from, but if this is on the write path, it may cause hints generation. You may need to dig into the source code to confirm the source of this message. On 16/02/2022 19:57, Inquistive allen wrote: Hello Team, I'm using Cassandra 3.0.9. Recently I have observed that, all the nodes in my cluster are generated hints. All the nodes are up but I do see hints getting generated continuously. In the logs I see tombstone warnings, but frequency is less I also see frequent message Unknown column during serialization. In the nodetool tpstats o/p i do see hintsdispatcher has actiive thread as 1 and pending as 42. The cluster is spread over multiple datacenters as well. Kindly suggest what may be inferred from above. Thanks
Continuous hints getting generated even when nodes are Up
Hello Team, I'm using Cassandra 3.0.9. Recently I have observed that, all the nodes in my cluster are generated hints. All the nodes are up but I do see hints getting generated continuously. In the logs I see tombstone warnings, but frequency is less I also see frequent message Unknown column during serialization. In the nodetool tpstats o/p i do see hintsdispatcher has actiive thread as 1 and pending as 42. The cluster is spread over multiple datacenters as well. Kindly suggest what may be inferred from above. Thanks
