> I did try to upgrade to 1.2 but it did not work out. Maybe to many versions > in between. Newer versions should be able to read older file formats. What was the error?
> Why would later formats make this easier you think? it will be easier to write against the current code base and you find it easier to get help. Cheers ----------------- Aaron Morton Freelance Cassandra Consultant New Zealand @aaronmorton http://www.thelastpickle.com On 16/04/2013, at 5:37 AM, Jasper K. <jasper.knu...@incentro.com> wrote: > Hi Aaron, > > I did try to upgrade to 1.2 but it did not work out. Maybe to many versions > in between. > > Why would later formats make this easier you think? > > Jasper > > > > 2013/4/14 aaron morton <aa...@thelastpickle.com> >> The SSTable files are in the -f- format from 0.8.10. > > If you can upgrade to the latest version it will make things easier. > Start a node and use nodetool upgradesstables. > > The org.apache.cassandra.tools.SSTableExport class provides a blue print for > reading rows from disk. > > hope that helps. > > ----------------- > Aaron Morton > Freelance Cassandra Consultant > New Zealand > > @aaronmorton > http://www.thelastpickle.com > > On 13/04/2013, at 7:58 PM, Jasper K. <jasper.knu...@incentro.com> wrote: > >> Hi, >> >> Does anyone have any experience with running a MapReduce directly against a >> CF's SSTable files? >> >> I have a use case where this seems to be an option. I want to export all >> data from a CF to a flat file format for statistical analysis. >> >> Some factors that make it (more) doable in my case: >> -The Cassandra instance is not 'on-line' (no writes- no reads) >> -The .db files were exported from another instance. I got them all in one >> place now >> >> The SSTable files are in the -f- format from 0.8.10. >> >> Looking at this : http://wiki.apache.org/cassandra/ArchitectureSSTable it >> should be possible to write a Hadoop RecordReader for Cassandra rowkeys. >> >> But maybe I am not fully aware of what I am up to. >> >> -- >> >> Jasper > > > > > -- >
