datastax-java-driver

I'm trying to run a user defined aggregate query to periodically roll up some values in a large table. I'm only trying to aggregate one partition at a time, but each partition can have lots of rows. Once I get past a certain number of rows in a partition, the query starts to fail with a timeout error since it seems to be using a fixed timeout value. But I'm in no hurry for the aggregate query to return results, and I'd like the coordinator node to take its time and aggregate all the rows without timing out. I'd also like to throttle the rate at which it pages through the results so that it

I am using datastax as a client for connecting to cassandra. I have successfully connected to cassandra cluster/keyspace/column families through Java. I am trying, firing some queries on cassandra column family thriugh java. For me it is working for simple queries like ResultSet results = session.execute("select * from demodb.customer where id = 1"); Now I want to take id parameter from user and pass it to session.execute(); statement. How should I go about it? Here is a code example of inserting data about an image using a prepared statements. PreparedStatement statement = getSession()

I am trying to run the following query SELECT edge_id, b_id FROM booking_by_edge WHERE edge_id IN ? I bind Java list of Long's as a parameter and I get an exception SyntaxError: line 0:-1 mismatched input '<EOF>' expecting ')' (ResultSetFuture.java:242) If I try to use (?) it expects single Long item to be bound, but I need a collection Is there an error in my syntax? Tested in Cassandra 2.1.3, the following code snippet works: PreparedStatement prepared = session.prepare("SELECT edge_id, b_id FROM booking_by_edge WHERE edge_id IN ?;"); List<Long> edgeIds = Arrays.asList(1L, 2L, 3L); session

I am evaluating cassandra. I am using the datastax driver and CQL. I would like to store some data with the following internal structure, where the names are different for each update. +-------+-------+-------+-------+-------+-------+ | | name1 | name2 | name3 | ... | nameN | | time +-------+-------+-------+-------+-------+ | | val1 | val2 | val3 | ... | valN | +-------+-------+-------+-------|-------+-------+ So time should be the column key, and name should be the row key. The CQL statement I use to create this table is: CREATE TABLE IF NOT EXISTS test.wide ( time varchar, name varchar,

While connecting to Cassandra client using java driver for Cannsandra by DataStax, it is throwing following error.. Exception in thread "main" com.datastax.driver.core.exceptions.NoHostAvailableException: All host(s) tried for query failed (tried: [/127.0.0.1]) Please suggest... Thanks! My java code is like this: package com.example.cassandra; import com.datastax.driver.core.Cluster; import com.datastax.driver.core.Host; import com.datastax.driver.core.Metadata; public class SimpleClient { private Cluster cluster; public void connect(String node){ cluster = Cluster.builder().addContactPoint