[release] OSS C/C++ v2.15.1 and DSE C/C++ v1.10.2 Patch Releases

[Fero]

We are happy to announce two new patch releases for the OSS and DSE C/C++ drivers.

OSS v2.15.1

Issue	Summary	Type
CPP-747	Cannot connect to Keyspace with Uppercase characters	Bug
CPP-847	Add CentOS 8 support	Task
CPP-889	Duplicated entry for the DSE features doc	Documentation
CPP-890	Update CCM bridge to work with C* 4.0 alpha releases	Test
CPP-891	Fix compiler issues with SSL certificates when using c++03 compilers	Test
CPP-897	Simplify cmake build	Improvement
CPP-913	It's possible for a token map replica set for a given range to have duplicates	Bug
CPP-914	It's possible for a WaitForHandler's on_set() method to be called after timeout/error	Bug

Community Contribution Summary	GitHub User	Type
Fix cflags when build with CASS_INSTALL_HEADER_IN_SUBDIR on	remicollet	Documentation
Fix typo in RequestProcessorInitializer::internal_initialize	m8mble	Build

DSE v1.10.2

Issue	Summary	Type
CPP-747	Cannot connect to Keyspace with Uppercase characters	Bug
CPP-847	Add CentOS 8 support	Task
CPP-884	Deprecate pending request timeouts metric and remove unused internal logic	Improvement
CPP-885	Fix filtering load balancing policies (and remove duplicated load balancing policy chain)	Bug
CPP-890	Update CCM bridge to work with C* 4.0 alpha releases	Test
CPP-913	It's possible for a token map replica set for a given range to have duplicates	Bug
CPP-914	It's possible for a WaitForHandler's on_set() method to be called after timeout/error	Bug

Note: Starting with OSS v2.15.0 all DSE driver features are present. We recommend upgrading to the new unified driver whenever possible.

DSE v1.10.2

Docs: https://docs.datastax.com/en/developer/cpp-dse-driver/1.10/

Packages:

• RHEL/CentOS 6
• RHEL/CentOS 7
• RHEL/CentOS 8
  
• Ubuntu 14.04 (Trusty)
• Ubuntu 16.04 (Xenial)
• Ubuntu 18.04 (Bionic)
• Windows

OSS v2.15.1

Docs: https://docs.datastax.com/en/developer/cpp-driver/2.15/

Packages:

• RHEL/CentOS 6
• RHEL/CentOS 7
• RHEL/CentOS 8
  
• Ubuntu 14.04 (Trusty)
• Ubuntu 16.04 (Xenial)
• Ubuntu 18.04 (Bionic)
• Windows

~Fero

 

[Paul McCracken]

Hello,

I am building a c++ application that uses the cpp-driver to connect to a Cassandra database. I updated to the latest 2.15.1 driver, and all of a sudden my application would go up to 100% cpu usage on startup and not get past the Cluster constructor.

I downloaded the code from github to debug it, and found the issue. The fix for CPP-913 (Ensure no duplicates in token map replica sets) was causing my build_replicas_simple to never complete.

Further digging revealed that my "system_distributed" and "system_traces" keyspaces were created with replication_factors of 3 and 2 respectively. My dev environment only has 1 node, so build_replicas_simple would add it initially, then repeat forever trying to add another one while skipping over the one that already was added.

I don't believe I did anything special when installing cassandra, installing the latest from apache, which I assume would have set up some default keyspaces.

Now, in my setup, having the replication factor set to greater than the number of nodes doesn't make much sense, so altering the keyspace to set the replication_factor to 1 means I am back up and running, but to me that should not be a reason for a hang on startup. Worst case error out if a replication_factor is greater than the number of nodes, but I would think a warning would be more appropriate.

Is this intended behaviour, or something that will get fixed?

I'm running Ubuntu 18.04 LTS. Initial install was back in mid-December, and it is pretty much up to date.

[cqlsh 5.0.1 | Cassandra 3.9 | CQL spec 3.4.2 | Native protocol v4]

Thanks,

Paul

[Tamal Adhikary]

Hi,

I am trying to connect to Cassandra version: 4.0-alpha using latest datastax cpp driver version from github. I am getting the following error.

1591368119.754 [ERROR] (cluster_connector.cpp:192:void datastax::internal::core::ClusterConnector::on_connect(datastax::internal::core::ControlConnector*)): Unable to establish a control connection to host 127.0.0.1 because of the following error: Underlying connection error: Received error response 'Invalid or unsupported protocol version (66); supported versions are (3/v3, 4/v4, 5/v5-beta)' (0x0200000A)

1591368119.754 [WARN] (cluster_connector.cpp:289:void datastax::internal::core::ClusterConnector::on_connect(datastax::internal::core::ControlConnector*)): Host 127.0.0.1 does not support protocol version DSEv2. Trying protocol version DSEv1...

1591368119.759 [ERROR] (cluster_connector.cpp:192:void datastax::internal::core::ClusterConnector::on_connect(datastax::internal::core::ControlConnector*)): Unable to establish a control connection to host 127.0.0.1 because of the following error: Underlying connection error: Received error response 'Invalid or unsupported protocol version (65); supported versions are (3/v3, 4/v4, 5/v5-beta)' (0x0200000A)

1591368119.759 [WARN] (cluster_connector.cpp:289:void datastax::internal::core::ClusterConnector::on_connect(datastax::internal::core::ControlConnector*)): Host 127.0.0.1 does not support protocol version DSEv1. Trying protocol version v4...

release_version: '4.0-alpha5-SNAPSHOT'

Is there any updated version of datastax?

Thanks.

[Michael Penick]

Does the driver not connect? 

Those are pretty normal warnings, the driver is negotiating the protocol version down to the supported version.

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[Tamal Adhikary]

I think it works. The query was:

const CassValue* value = cass_row_get_column_by_name(row, "release_version");

        const char* release_version;

        size_t release_version_length;

        cass_value_get_string(value, &release_version, &release_version_length);

        printf("release_version: '%.*s'\n", (int)release_version_length, release_version);

The version of Cassandra is showing.

I got confused with the warning messages and it aslo contained [ERROR] token.

Thanks a lot.