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DataStax C++ Driver for Apache Cassandra User Mailing List

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The C/C++ driver has been donated to the Apache Software Foundation (ASF). The repo is now located at https://github.com/apache/cassandra-cpp-driver. Issues should be filed at the ASF JIRA, specifically https://issues.apache.org/jira/browse/CASSCPP.

All support is now handled through #cassandra-drivers on ASF Slack (https://the-asf.slack.com/). Please use that channel for all communication going forward, including support requests, feature requests and general discussion. Messages to this list may occasionally receive a reply but there is no guarantee of a response of any kind.

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Uilian Ries, Bret McGuire3

12/2/25

Checksum mismatch on sources for version 2.16.1 from Github

Hello Bret! After doing a further investigation, the checksum mismatch was caused by the root folder

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Checksum mismatch on sources for version 2.16.1 from Github

Hello Bret! After doing a further investigation, the checksum mismatch was caused by the root folder

12/2/25

Oliver Herrmann, … Bret McGuire3

11/2/25

Network Address Translation

Thanks for letting us know, Sheila. We certainly offer our condolences on behalf of everybody

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Network Address Translation

Thanks for letting us know, Sheila. We certainly offer our condolences on behalf of everybody

11/2/25

Yunzhi Shi, … Vanessa3

3/4/25

Driver tries to reconnect to a contact point based on its resolved IP, not its original DNS name.

Hi Fero, cpp-driver users, See that CPP-759 is still open. Are you aware of any K8S config or client

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Driver tries to reconnect to a contact point based on its resolved IP, not its original DNS name.

Hi Fero, cpp-driver users, See that CPP-759 is still open. Are you aware of any K8S config or client

3/4/25

ora...@xmission.com, Bret McGuire4

2/6/25

configuring cassandra to "see" datastax C++ on the filesystem

TY! Quoting Bret McGuire <bret.m...@datastax.com>: > Thanks for the question orafin! >

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configuring cassandra to "see" datastax C++ on the filesystem

TY! Quoting Bret McGuire <bret.m...@datastax.com>: > Thanks for the question orafin! >

2/6/25

Athinaida Christopoulou

1/8/25

How to set up SNI on SSL

Hello! I tried to configure SNI on Cassandra Client with SSL, but I couldn't find any information

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How to set up SNI on SSL

Hello! I tried to configure SNI on Cassandra Client with SSL, but I couldn't find any information

1/8/25

11/15/24

Plans for a 2.17.2 and 2.18.0 release

Greetings all! I've finally freed up a bit of time to work on the next C/C++ driver release and

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Plans for a 2.17.2 and 2.18.0 release

Greetings all! I've finally freed up a bit of time to work on the next C/C++ driver release and

11/15/24

11/4/24

Cassandra C++ driver crash when session is closed

Hello community, I have an application which uses the Cassandra C++ driver 2.17.0 with libuv 1.48.0.

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Cassandra C++ driver crash when session is closed

Hello community, I have an application which uses the Cassandra C++ driver 2.17.0 with libuv 1.48.0.

11/4/24

7/16/24

[DISCUSS] Request for feedback re: new large features to (potentially) be added to the Apache Cassandra drivers still maintained by DataStax

Originally posted to (user && dev)@cassandra.apache.org, cross-posting here since folks here

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[DISCUSS] Request for feedback re: new large features to (potentially) be added to the Apache Cassandra drivers still maintained by DataStax

Originally posted to (user && dev)@cassandra.apache.org, cross-posting here since folks here

7/16/24

7/15/24

Paging issues with Cosmos DB

One of our customers attempted to use Cosmos DB via Cassandra wrapper and was seeing all kinds of

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Paging issues with Cosmos DB

One of our customers attempted to use Cosmos DB via Cassandra wrapper and was seeing all kinds of

7/15/24

Sonal Sharma, Bret McGuire2

7/10/24

Errors during compilation | Cassandra C++ driver 2.17.1

Hey Sonal, thanks for the report! It took a bit of digging but it does look like we lost reliable

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Errors during compilation | Cassandra C++ driver 2.17.1

Hey Sonal, thanks for the report! It took a bit of digging but it does look like we lost reliable

7/10/24

Pavel, … Bret McGuire3

1/12/24

Speculative executions, retries and read / write timeouts

Hey Dakshita, thanks for the question! I thought it might be useful to add a reply to Pavel's

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Speculative executions, retries and read / write timeouts

Hey Dakshita, thanks for the question! I thought it might be useful to add a reply to Pavel's

1/12/24

10/26/23

[Release] OSS 2.17.1

Greetings all! Today I'm pleased to announce the release of version 2.17.1 of the DataStax C/C++

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[Release] OSS 2.17.1

Greetings all! Today I'm pleased to announce the release of version 2.17.1 of the DataStax C/C++

10/26/23

大久保翔平, Bret McGuire9

9/29/23

Support for openssl3.x

Happy to help Shohei! For the record, while looking into this issue for CPP-990 it became clear that

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Support for openssl3.x

Happy to help Shohei! For the record, while looking into this issue for CPP-990 it became clear that

9/29/23

Carl Colena (BLOOMBERG/ 731 LEX), Bret McGuire2

9/22/23

Threading bugs found in cpp driver

Thanks for reporting both these issues Carl and for the detailed analysis that went into both reports

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Threading bugs found in cpp driver

Thanks for reporting both these issues Carl and for the detailed analysis that went into both reports

9/22/23

Deepti Sharma, Bret McGuire2

8/9/23

datastax driver C++ queries

Hey Deepti, thanks for the question! It looks like this change came in with CPP-745 which introduced

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datastax driver C++ queries

Hey Deepti, thanks for the question! It looks like this change came in with CPP-745 which introduced

8/9/23

8/8/23

[Release] OSS 2.17.0

Greetings all! Today I'm pleased to announce the release of version 2.17.0 of the DataStax C/C++

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[Release] OSS 2.17.0

Greetings all! Today I'm pleased to announce the release of version 2.17.0 of the DataStax C/C++

8/8/23

3/29/23

Query on CPP driver

Hello Team, Please help here. Regards Deepti On Thursday, March 23, 2023 at 10:20:38 AM UTC+5:30

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Query on CPP driver

Hello Team, Please help here. Regards Deepti On Thursday, March 23, 2023 at 10:20:38 AM UTC+5:30

3/29/23

Patrick L, Bret McGuire3

2/15/23

UDT type validation bottlenecking Cassandra writes in cpp-driver

Hi Bret, thank you for the response! Thank you also for creating the issue to track this item.

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UDT type validation bottlenecking Cassandra writes in cpp-driver

Hi Bret, thank you for the response! Thank you also for creating the issue to track this item.

2/15/23

Deepti Sharma, Bret McGuire2

1/3/23

DataStax C/C++ Driver latest version 2.16 is also compatible with application(C++98)

Thanks for the question Deepti! If you use gcc or clang and have specified CASS_USE_STD_ATOMIC you

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DataStax C/C++ Driver latest version 2.16 is also compatible with application(C++98)

Thanks for the question Deepti! If you use gcc or clang and have specified CASS_USE_STD_ATOMIC you

1/3/23

Matt Massicotte

12/22/22

Hosts unavailable when used with AWS Keyspaces

Hello everyone! I'm trying out this driver by way of Apple's newly-release Swift wrapper:

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Hosts unavailable when used with AWS Keyspaces

Hello everyone! I'm trying out this driver by way of Apple's newly-release Swift wrapper:

12/22/22

W N, Bret McGuire2

12/6/22

C++ Driver Compatibility with Cassandra 3.11.x

Thanks for the message! The current version of the C++ driver supports CQL protocol version 4 (and 3)

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C++ Driver Compatibility with Cassandra 3.11.x

Thanks for the message! The current version of the C++ driver supports CQL protocol version 4 (and 3)

12/6/22

Ahmed Eljami, Bret McGuire2

12/6/22

Cassandra-4 Compatbility

Thanks for your message! My apologies, I missed this when it originally came through. Protocol

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Cassandra-4 Compatbility

Thanks for your message! My apologies, I missed this when it originally came through. Protocol

12/6/22

David Grinberg, Michael Penick2

8/5/22

Authenticator callbacks are not working

Are you sure you have authentication enabled on your cassandra cluster? Modified with logging: ```

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Authenticator callbacks are not working

Are you sure you have authentication enabled on your cassandra cluster? Modified with logging: ```

8/5/22

Randy Klingenberg, Michael Penick2

8/4/22

cass_value_get_string returns not null terminated strings should be documented. Spent quite a bit of time on this one.

Sorry you ran into that issue. You're right that should be documented. I'll create an issue

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cass_value_get_string returns not null terminated strings should be documented. Spent quite a bit of time on this one.

Sorry you ran into that issue. You're right that should be documented. I'll create an issue

8/4/22

Volker Kleinfeld

8/3/22

Busy Loop in cassandra driver thread

Hello, we are experiencing busy loops in the cassandra driver threads. The Cassandra driver version

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Busy Loop in cassandra driver thread

Hello, we are experiencing busy loops in the cassandra driver threads. The Cassandra driver version

8/3/22

12/8/21

[Release] OSS 2.16.2

This patch release addresses an issue with SNI events and cleans up an issue on event loop shutdown

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[Release] OSS 2.16.2

This patch release addresses an issue with SNI events and cleans up an issue on event loop shutdown

12/8/21

Keith Lu, … Asif Iqbal K A7

8/12/21

keep printing warning msg if cassandra restart with IP changes

Hi Michael, Any clue about this issue. On Thursday, July 1, 2021 at 1:09:27 PM UTC+5:30 Asif Iqbal KA

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keep printing warning msg if cassandra restart with IP changes

Hi Michael, Any clue about this issue. On Thursday, July 1, 2021 at 1:09:27 PM UTC+5:30 Asif Iqbal KA

8/12/21

8/8/21

Packages for Ubuntu 20.04 LTS

Hi Folks Currently deb packages for up to Ubuntu 18.04 LTS are being built and published. Is there

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Packages for Ubuntu 20.04 LTS

Hi Folks Currently deb packages for up to Ubuntu 18.04 LTS are being built and published. Is there

8/8/21

5/27/21

Cassandra Driver Throttling

Hello, We are currently using the driver to issue lots of asynchronous queries, and have been very

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Cassandra Driver Throttling

Hello, We are currently using the driver to issue lots of asynchronous queries, and have been very

5/27/21

4/7/21

Moving to C++11/14

Are there any objections to allowing the use of C++11 or C++14 features in the internal

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Moving to C++11/14

Are there any objections to allowing the use of C++11 or C++14 features in the internal

4/7/21

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