Re: downgrade from 1.1.4 to 1.0.X
I suppose the way is to convert all SST to json, then install previous version, convert back and load 2012/9/24 Arend-Jan Wijtzes ajwyt...@wise-guys.nl On Thu, Sep 20, 2012 at 10:13:49AM +1200, aaron morton wrote: No. They use different minor file versions which are not backwards compatible. Thanks Aaron. Is upgradesstables capable of downgrading the files to 1.0.8? Looking for a way to make this work. Regards, Arend-Jan On 18/09/2012, at 11:18 PM, Arend-Jan Wijtzes ajwyt...@wise-guys.nl wrote: Hi, We are running Cassandra 1.1.4 and like to experiment with Datastax Enterprise which uses 1.0.8. Can we safely downgrade a production cluster or is it incompatible? Any special steps involved? -- Arend-Jan Wijtzes -- Wiseguys -- www.wise-guys.nl -- Best regards, Vitalii Tymchyshyn
Re: downgrade from 1.1.4 to 1.0.X
On Thu, Sep 27, 2012 at 2:46 AM, Віталій Тимчишин tiv...@gmail.com wrote: I suppose the way is to convert all SST to json, then install previous version, convert back and load Only files flushed in the new version will need to be dumped/reloaded. Files which have not been scrubbed/upgraded (ie, have the 1.0 -h[x]- version) get renamed to different names in 1.1. You can revert all of these files back to 1.0 as long as you change their names back to 1.0 style names, which is presumably what your snapshots contain... =Rob -- =Robert Coli AIMGTALK - rc...@palominodb.com YAHOO - rcoli.palominob SKYPE - rcoli_palominodb
Re: downgrade from 1.1.4 to 1.0.X
We have paid tool capable of downgrading cassandra 1.2, 1.1, 1.0, 0.8.
Re: downgrade from 1.1.4 to 1.0.X
No. Versions are capable of reading previous file formats, but can only create files in the current format. File formats are listed here https://github.com/apache/cassandra/blob/trunk/src/java/org/apache/cassandra/io/sstable/Descriptor.java#L52 Looking for a way to make this work. I'd suggest contacting DS either through their support forums or directly via email. Cheers - Aaron Morton Freelance Developer @aaronmorton http://www.thelastpickle.com On 25/09/2012, at 12:53 AM, Arend-Jan Wijtzes ajwyt...@wise-guys.nl wrote: On Thu, Sep 20, 2012 at 10:13:49AM +1200, aaron morton wrote: No. They use different minor file versions which are not backwards compatible. Thanks Aaron. Is upgradesstables capable of downgrading the files to 1.0.8? Looking for a way to make this work. Regards, Arend-Jan On 18/09/2012, at 11:18 PM, Arend-Jan Wijtzes ajwyt...@wise-guys.nl wrote: Hi, We are running Cassandra 1.1.4 and like to experiment with Datastax Enterprise which uses 1.0.8. Can we safely downgrade a production cluster or is it incompatible? Any special steps involved? -- Arend-Jan Wijtzes -- Wiseguys -- www.wise-guys.nl
Re: downgrade from 1.1.4 to 1.0.X
On Thu, Sep 20, 2012 at 10:13:49AM +1200, aaron morton wrote: No. They use different minor file versions which are not backwards compatible. Thanks Aaron. Is upgradesstables capable of downgrading the files to 1.0.8? Looking for a way to make this work. Regards, Arend-Jan On 18/09/2012, at 11:18 PM, Arend-Jan Wijtzes ajwyt...@wise-guys.nl wrote: Hi, We are running Cassandra 1.1.4 and like to experiment with Datastax Enterprise which uses 1.0.8. Can we safely downgrade a production cluster or is it incompatible? Any special steps involved? -- Arend-Jan Wijtzes -- Wiseguys -- www.wise-guys.nl
Re: downgrade from 1.1.4 to 1.0.X
No. They use different minor file versions which are not backwards compatible. Cheers - Aaron Morton Freelance Developer @aaronmorton http://www.thelastpickle.com On 18/09/2012, at 11:18 PM, Arend-Jan Wijtzes ajwyt...@wise-guys.nl wrote: Hi, We are running Cassandra 1.1.4 and like to experiment with Datastax Enterprise which uses 1.0.8. Can we safely downgrade a production cluster or is it incompatible? Any special steps involved? Arend-Jan -- Arend-Jan Wijtzes -- Wiseguys -- www.wise-guys.nl
downgrade from 1.1.4 to 1.0.X
Hi, We are running Cassandra 1.1.4 and like to experiment with Datastax Enterprise which uses 1.0.8. Can we safely downgrade a production cluster or is it incompatible? Any special steps involved? Arend-Jan -- Arend-Jan Wijtzes -- Wiseguys -- www.wise-guys.nl
