Tungsten Clustering

Tungsten Clustering 6.1.7

Build: 13

Release Date: 5 Oct 2020

End of Life Date: 15 Aug 2024

Product End of Life

This release is past End of Life.

Release 6.1.7 was a minor bug fix release containing a fix for SSL Communications specific to clustering deployments.

Bug Fixes (4)

Disables the Naggle algorithm (TcpNoDelay=true) on SSL Sockets which causes performance degradation on SSL communications within the connector.
Issue: CT-1331
Allows configuration of the protocols and cipher suites to use within the drizzle driver for SSL communications to the database server.
New TPM parameters can be used to control this. New parameters are as follows:
```
connector-server-ssl-protocols=protocol1[,protocol2,...]
connector-server-ssl-ciphers=cipher1[,cipher2,...]
```
For example:
```
connector-server-ssl-protocols=TLSv1.2
connector-server-ssl-ciphers=TLS_RSA_WITH_AES_256_CBC_SHA256,TLS_RSA_WITH_AES_256_CBC_SHA512
```
Default values for connector-server-ssl-protocols will be TLSv1,TLSv1.1,TLSv1.2.
Default values for connector-server-ssl-ciphers will be to allow all cipher suites supported by the running JVM.
Issue: CT-1335
When the Primary node is not available (for example during switch/failover), the connector would pause incoming RO_RELAXED connection requests even if a Replica is available for reads.
Note
This only applies to connectors configured in Bridge Mode.
Issue: CT-1337
c3p0 libraries upgraded to version 0.9.5.5 and adjusted recommended pool configuration.
Issue: CT-1343