Created
April 7, 2014 12:12
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| [...] | |
| def forked_call(pagination_counts, pagination_standard, keys, timeout, num_nodes): | |
| #Connection to Cassandra | |
| connection = cassandraHelpers.ConnectAndOpenSession(timeout=timeout, executor_threads=num_nodes) | |
| session = connection['session'] | |
| print(len(keys)) | |
| def go_threads(workers, keys, pagination_counts, pagination_standard, timeout, num_nodes): | |
| pool = Pool(processes=workers) | |
| list_of_partitions = chunks(keys, workers) | |
| for l in list_of_partitions: | |
| pool.apply_async(forked_call, args=(pagination_counts, pagination_standard, l, timeout, num_nodes)) | |
| pool.close() | |
| pool.join() | |
| [...] | |
| #In cassandraHelpers.py file | |
| [...] | |
| def ConnectAndOpenSession(servers=SERVERS, keyspace=KEYSPACE, timeout=10.0, row_factory=named_tuple_factory, connection_class=LibevConnection, executor_threads=3): | |
| try: | |
| cluster = Cluster(servers, executor_threads=executor_threads) | |
| cluster.connection_class = connection_class | |
| session = cluster.connect(keyspace) | |
| session.row_factory = row_factory | |
| session.default_timeout = timeout | |
| return {'cluster': cluster, 'session': session} | |
| except: | |
| print "ERROR: Unknown error connecting the server" | |
| traceback.print_exc() |
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