> Potential sources of simultaneous disk write :
>
> - Memtable flushing
> - SSTable compaction/anticompaction
> - SSTable streaming
> - Commitlog writes (which should be on a different drive from data per
> best practices anyway..)
Honestly though, last time I measured the effects of multiple
str
On Wed, Mar 2, 2011 at 2:51 PM, Peter Schuller
wrote:
> Cassandra is about as friendly as it can be with respect to
> fragmentation. All data is written sequentially and in bulk.
That said, there can be more than one thread writing at a time, which
doesn't help fragmentation. On the plus side, "m
> Are there any details on how much of an issue fragmentation is (with
> Cassandra ) ?
> With all the merging and deletes that happen with during compactions,
> how does the disk fragmentation look like over time ? Any thumb-rules
> on how frequently and how to defrag ?
Cassan
Are there any details on how much of an issue fragmentation is (with
Cassandra ) ?
With all the merging and deletes that happen with during compactions,
how does the disk fragmentation look like over time ? Any thumb-rules
on how frequently and how to defrag ?
Thanks.
