Re: Table design for historical data

2015-04-01 Thread Eric R Medley
to satisfy those queries. Regards, Eric R Medley > On Apr 1, 2015, at 10:54 AM, Firdousi Farozan wrote: > > Hi, > > My requirement is to design a table for historical state information (not > exactly time-series). For ex: I have devices connecting and disconnecting to

Re: Frequent timeout issues

2015-04-01 Thread Eric R Medley
Are HBase and Cassandra running on the same servers? Are the writes to each of these databases happening at the same time? Regards, Eric R Medley > On Apr 1, 2015, at 10:12 AM, Brice Dutheil wrote: > > And the keyspace? What is the replication factor. > > Also how are t

Re: Frequent timeout issues

2015-04-01 Thread Eric R Medley
Are you seeing any exceptions in the cassandra logs? What are the loads on your servers? Have you monitored the performance of those servers? How many writes are you performing at a time? How many writes per seconds? Regards, Eric R Medley > On Apr 1, 2015, at 9:40 AM, Amlan Roy wr

Re: Frequent timeout issues

2015-04-01 Thread Eric R Medley
Also, can you provide the table details and the consistency level you are using? Regards, Eric R Medley > On Apr 1, 2015, at 9:13 AM, Eric R Medley wrote: > > Amlan, > > Can you provide information on how much data is being written? Are any of the > columns really lar

Re: Frequent timeout issues

2015-04-01 Thread Eric R Medley
Amlan, Can you provide information on how much data is being written? Are any of the columns really large? Are any writes succeeding or are all timing out? Regards, Eric R Medley > On Apr 1, 2015, at 9:03 AM, Amlan Roy wrote: > > Hi, > > I am new to Cassandra. I have setup