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Posted to user@cassandra.apache.org by Subodh Nijsure <su...@gmail.com> on 2014/08/17 21:32:58 UTC
Suggestion for improving cassandra performance
I have table with 128244 entries in it. I am running one cassandra
node on AWS EC2 x.large instance.
Cassandra is the only daemon running on this machine. Its SSD storage.
Its taking cassandra python driver running on another machine 7
seconds to retrieve that data. This is pretty small table with
following entries:
asset_id text,
event_time timestamp,
sensor_serial_number text,
sensor_type int,
temperature float,
humidity float,
polling_freq int,
I was wondering if there is anything I can do from cassandra
configuration side to make this faster?
I have already made the table with this option:
AND caching = '{"keys":"ALL", "rows_per_partition":"ALL"}'
And in my cassandra.xml I have set row_cache_size_in_mb to 20. That
doesn't seem to make that much difference. Are there any other
parameters I could be tuning to cut down this fetch time?
-Subodh