Hey guys,
I have updated all my column families with 32 as the memtable_throughput. I
will let you know how cassandra behaves.
Thanks!
On Mon, May 16, 2011 at 3:52 PM, mcasandra <mohitanch...@gmail.com> wrote:
> You can try to update column family using cassandra-cli. Try to set
> memtable_throughput to 32 first.
>
> [default@unknown] help update column family;
> update column family Bar;
> update column family Bar with <att1>=<value1>;
> update column family Bar with <att1>=<value1> and <att2>=<value2>...;
>
> Update a column family with the specified values for the given set of
> attributes. Note that you must be using a keyspace.
>
> valid attributes are:
> - column_type: Super or Standard
> - comment: Human-readable column family description. Any string is
> acceptable
> - rows_cached: Number or percentage of rows to cache
> - row_cache_save_period: Period with which to persist the row cache, in
> seconds
> - keys_cached: Number or percentage of keys to cache
> - key_cache_save_period: Period with which to persist the key cache, in
> seconds
> - read_repair_chance: Probability (0.0-1.0) with which to perform read
> repairs on CL.ONE reads
> - gc_grace: Discard tombstones after this many seconds
> - column_metadata: null
> - memtable_operations: Flush memtables after this many operations (in
> millions)
> - memtable_throughput: ... or after this many MB have been written
> - memtable_flush_after: ... or after this many minutes
> - default_validation_class: null
> - min_compaction_threshold: Avoid minor compactions of less than this
> number of sstable files
> - max_compaction_threshold: Compact no more than this number of sstable
> files at once
> - column_metadata: Metadata which describes columns of column family.
> Supported format is [{ k:v, k:v, ... }, { ... }, ...]
> Valid attributes: column_name, validation_class (see comparator),
> index_type (integer), index_name.
>
>
> --
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>
