Re: SSTable structure

2015-04-02 Thread Serega Sheypak
Thank you, great to know that. 2015-04-01 23:14 GMT+02:00 Bharatendra Boddu bharatend...@gmail.com: Hi Serega, Most of the content in the blog article is still relevant. After 1.2.5 (ic), there are only three new versions (ja, jb, ka) for SSTable format. Following are the changes in these

Re: SSTable structure

2015-04-01 Thread Serega Sheypak
Hi bharat, you are talking about Cassandra 1.2.5 Does it fit Cassandra 2.1? Were there any significant changes to SSTable format and layout? Thank you, article is interesting. Hi jacob jacob.rho...@me.com, HBase does it for example. http://hbase.apache.org/book.html#_hfile_format_2 It would be

Re: SSTable structure

2015-04-01 Thread Bharatendra Boddu
Hi Serega, Most of the content in the blog article is still relevant. After 1.2.5 (ic), there are only three new versions (ja, jb, ka) for SSTable format. Following are the changes in these versions. // ja (2.0.0): super columns are serialized as composites (note that there is no real

Re: SSTable structure

2015-03-31 Thread Bharatendra Boddu
Some time back I created a blog article about the SSTable storage format with some code references. Cassandra: SSTable Storage Format http://distributeddatastore.blogspot.com/2013/08/cassandra-sstable-storage-format.html - bharat On Mon, Mar 30, 2015 at 5:24 PM, Jacob Rhoden jacob.rho...@me.com

SSTable structure

2015-03-30 Thread Pierre
Hi, Does anyone know if there is a more complete and up to date documentation about the sstable files structure (data, index, stats etc.) than this one : http://wiki.apache.org/cassandra/ArchitectureSSTable I'm looking for a full specification, with schema of the structure if possible.

Re: SSTable structure

2015-03-30 Thread ssiv...@gmail.com
+1 On 03/30/2015 11:38 AM, Pierre wrote: Hi, Does anyone know if there is a more complete and up to date documentation about the sstable files structure (data, index, stats etc.) than this one : http://wiki.apache.org/cassandra/ArchitectureSSTable I'm looking for a full specification,

Re: SSTable structure

2015-03-30 Thread Robert Coli
On Mon, Mar 30, 2015 at 1:38 AM, Pierre pierredev...@gmail.com wrote: Does anyone know if there is a more complete and up to date documentation about the sstable files structure (data, index, stats etc.) than this one : http://wiki.apache.org/cassandra/ArchitectureSSTable No, there isn't.

Re: SSTable structure

2015-03-30 Thread daemeon reiydelle
why? Then there are 2 places 2 maintain or get jira'ed for a discrepancy. On Mar 30, 2015 4:46 PM, Robert Coli rc...@eventbrite.com wrote: On Mon, Mar 30, 2015 at 1:38 AM, Pierre pierredev...@gmail.com wrote: Does anyone know if there is a more complete and up to date documentation about the

Re: SSTable structure

2015-03-30 Thread Kirk True
The tricky thing with documenting the SS tables is that there are a lot of conditionals in the structure, so it makes for twisty reading. Just for fun, here's a terrible start I made once: https://github.com/mustardgrain/cassandra-notes/blob/master/SSTables.md On Mon, Mar 30, 2015, at 05:12 PM,

Re: SSTable structure

2015-03-30 Thread Robert Coli
On Mon, Mar 30, 2015 at 5:07 PM, daemeon reiydelle daeme...@gmail.com wrote: why? Then there are 2 places 2 maintain or get jira'ed for a discrepancy. If you are asserting that code is capable of documenting itself, we will just have to agree to disagree. =Rob

Re: SSTable structure

2015-03-30 Thread Jacob Rhoden
Yes updating code and documentation can sometimes be annoying, you would only ever maintain both if it were important. It comes down or is having the format of the data files documented for everyone to understand an important thing? __ Sent from iPhone On 31 Mar

Re: sstable structure

2015-01-09 Thread Tyler Hobbs
sstable2json can give you a pretty good idea of the format. Otherwise, your best option is to read the code, starting with org.apache.cassandra.io.sstable.SSTableWriter. On Fri, Jan 2, 2015 at 12:27 PM, Nikolay Mihaylov n...@nmmm.nu wrote: Hi from some time I try to find the structure of

sstable structure

2015-01-02 Thread Nikolay Mihaylov
Hi from some time I try to find the structure of sstable is it documented somewhere or can anyone explain it to me I am speaking about hex dump bytes stored on the disk. Nick.