Hi Guys,
I have started understanding Cassandra and am working with it recently.
I have created two Column Families. For CF1, a write is an insert into a
unique row with all column values. Eg:
Key Col1 Col2 Col3
k1 c11 c12 c13
k2 c21 c22 c23
For CF2. a write is an insert into a time stamped column of a row. Eg:
Key timeCol1 timeCol2
k1 ct11
k1 ct12
k2 ct21
k2 ct22
I am using YCSB and using thrift based *client.batch_mutate()* call. For
CF1, i send all column vals for a row through the call. For CF2, i send the
new column vals for a row.
Now say opscenter reports the "write requests" as say 1000 *operations*/sec
when a record count is say 10000 records.
OpsCenter API docs say 'Write Requests" as "requests per second".
What does an operation/request mean from opscenter perspective? Does it
mean unique row inserts across all column families ? Does it mean count of
each mutations for a row ?
How does opscenter identify a unique operation/request ? Is it related or
dependent on the row count or mutation count of batch_mutate() call ?
>From application perspective an operation means differently for both column
families.
Can some one guide me ?
Thanks,
Arun
