Cassandra 2.2.6 Fails to Boot Up correctly - JNA Class

We are running apache-cassandra-2.2.6 for months with no JNA startup issues. Recently, we have updated some of our cassandra machines and we ran into a Cassandra startup issue with JNA. See the stack trace 1 below. Question 1: Our Cassandra package contains jna-4.0.0.jar in the

Nodetool tablehistograms

Hi Everyone, Here is the result of my tablehistograms command on one of our tables. Percentile SSTables Write Latency Read LatencyPartition Size Cell Count (micros) (micros) (bytes) 50% 4.00 73.46

Solutions.Hamburg conference speaking opportunity

Hello Apache Cassandra Community, Solutions.Hamburg is offering Apache conference speaking slots, and some time to advertise for the ASF. We were wondering if anyone in the Cassandra community would like to give a technical talk on Apache Cassandra, between September 6-8 in Hamburg. This is an

Re: Nodetool tablehistograms

Its the number of sstables that may of been read from. This includes sstables who had their bloom filters checked (which may hit disk). This changes a bit in https://issues.apache.org/jira/browse/CASSANDRA-13120 to be only the sstables that its actually reading from. On Wed, Jul 19, 2017 at

Sync Spark Data with Cassandra Using Incremental Data Loading

I have a scenario where data has to be loaded into Spark nodes from two data stores: Oracle and Cassandra. We did the initial loading of data and found a way to do daily incremental loading from Oracle to Spark. I’m tying to figure our how to do this from C*. What tools are available in C* to

Re: write time for nulls is not consistent

Same output Kurt, [cqlsh 5.0.1 | Cassandra 3.0.10.1443 | DSE 5.0.4 | CQL spec 3.4.0 | Native protocol v4] Use HELP for help. cqlsh> select a, writetime(b) from test.t; a | writetime(b) ---+-- z | null a | null c | null e |

Re: Sync Spark Data with Cassandra Using Incremental Data Loading

The easiest way to do this is to create another Cassandra DC and point Spark to it, since Spark can operate directly on data in Cassandra. No impact on C* performance and no complex backup/restore process required, just let Cassandra replicate the data for you. If you need a scalable bulk

Re: Cassandra 2.2.6 Fails to Boot Up correctly - JNA Class

On 2017-07-19 10:41 (-0700), William Boutin wrote: > We are running apache-cassandra-2.2.6 for months with no JNA startup issues. > Recently, we have updated some of our cassandra machines and we ran into a > Cassandra startup issue with JNA. See the stack trace

Re: Solutions.Hamburg conference speaking opportunity

On 2017-07-19 02:05 (-0700), Myrle Krantz wrote: > Hello Apache Cassandra Community, > > Solutions.Hamburg is offering Apache conference speaking slots, and > some time to advertise for the ASF. We were wondering if anyone in > the Cassandra community would like to give a

Re: write time for nulls is not consistent

This doesn't reproduce with the steps you're providing. There's clearly some pre-existing data in the table, and some sort of operation on that table in the past that isn't evident from your repro steps. (oss-ccm) MacBook-Pro:~ jjirsa$ ccm create test -n 1 -s -v 3.0.10 Current cluster is now: