Hi, I would recommend to turn tracing on in CQL. Using this you can find out that part of the query results in high latency.
http://www.datastax.com/documentation/cql/3.0/cql/cql_reference/tracing_r.html Regards Andi ________________________________ From: yhq...@sina.com [yhq...@sina.com] Sent: 26 December 2014 14:01 To: user Subject: Why read row is so slower than read column. Hi, all: In my cf, each row has two column, one column is the timestamp(64bit), another column is data which may be 500k about. I read row, the qps is about 30. I read that data column, the qps is about 500. Why read performance is so slow where add a so small column in read?? Thanks.
