Hint: using the Java driver, you can set the fetchSize to tell the driver
how many CQL rows to fetch for each page.
Depending on the size (in bytes) of each CQL row, it would be useful to
tune this fetchSize value to avoid loading too much data into memory for
each page
On Wed, Jan 28, 2015 at 8
This is hard to answer. The performance is a thing depending on context.
You could tune various parameters.
At 2015-01-28 14:43:38, "Shenghua(Daniel) Wan" wrote:
Cool. What about performance? e.g. how many record for how long?
On Tue, Jan 27, 2015 at 10:16 PM, Xu Zhongxing wrote:
For Java d
Cool. What about performance? e.g. how many record for how long?
On Tue, Jan 27, 2015 at 10:16 PM, Xu Zhongxing
wrote:
> For Java driver, there is no special API actually, just
>
> ResultSet rs = session.execute("select * from ...");
> for (Row r : rs) {
>...
> }
>
> For Spark, the code skel
For Java driver, there is no special API actually, just
ResultSet rs = session.execute("select * from ...");
for (Row r : rs) {
...
}
For Spark, the code skeleton is:
val rdd = sc.cassandraTable("ks", "table")
then call various standard Spark API to process the table parallelly.
I have
Recently I surveyed this topic and you may want to take a look at
https://github.com/fullcontact/hadoop-sstable
and
https://github.com/Netflix/aegisthus
On Tue, Jan 27, 2015 at 5:33 PM, Xu Zhongxing wrote:
> Both Java driver "select * from table" and Spark sc.cassandraTable() work
> well.
> I u
Hi, Zhongxing,
I am also interested in your table size. I am trying to dump 10s Million
record data from C* using map-reduce related API like CqlInputFormat.
You mentioned about Java driver. Could you suggest any API you used? Thanks.
On Tue, Jan 27, 2015 at 5:33 PM, Xu Zhongxing wrote:
> Both J
Hi -
Over the last few weeks, I have seen several emails on this mailing list from
people trying to extract all data from C*, so that they can import that data
into other analytical tools that provide much richer analytics functionality
than C*. Extracting all data from C* is a full-table scan,
