CODEWITHSUNDEEP
phplinuxcassandradatastax-php-drivercassandra-3.0
RyanJ
RyanJ

Reputation: 131

Unable to connect to Cassandra after upgrade to 3.0.0

I've upgraded Cassandra to 3.0.0 some minutes ago through apt-get upgrade (on Ubuntu Linux 14.04 LTS) and after installation and restarting I could connect to my keyspaces using the cqlsh tool and all was ok but when I tried to connect using the DataStax PHP Driver the first time I got "All connections on all I/O threads are busy" but now I get "No hosts available for the control connection". Connection data are the same, so 127.0.0.1 and the default port 9042, I didn't change nothing in configuration. I've tried to downgrade Cassandra to 2.2.3 but after installation it doesn't complete the start sequence. Is this a bug, of Cassandra or of PHP Driver? There are any ways to restore it without lost datas (with 3.0 or lower version)?

Upvotes: 0

Views: 1451

Answers (1)

Reinier
Reinier

Reputation: 262

Edit: Version 3+ is not supported. Not even their enterprise version supports Cassandra 3+: Compatible versions of DataStax Enterprise and Cassandra

The error messaging of the DataStax PHP Driver could use some improvement...

Things that got me before with this error message:

  • Make sure you are connecting to the right server.
  • Might be a conflict between the different versions.

But as far as I know, the DataStax PHP Driver does not support Cassandra 3+. Only version 2.1. And also version 2.2, but not completely.

From their docs:

Compatibility This driver works exclusively with the Cassandra Query Language v3 (CQL3) and Cassandra’s native protocol. The current version works with:

Apache Cassandra versions 1.2, 2.0 and partially 2.1 DataStax Enterprise 3.1, 3.2, 4.0 and 4.5 PHP 5.3.4+ Compilers: GCC 4.1.2+, Clang 3.4+, and MSVC 2010/2012/2013 NOTE: Apache Cassandra 2.1 support is limited to the Cassandra 2.0 API (native protocol v2), e.g. no user-defined types.

DataStax PHP Driver for Apache Cassandra

Unfortunately I don't know anything about downgrading Cassandra...

Upvotes: 0

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