Re: Ring show high load average when restarting a node.

2016-12-06 Thread Colin Kuo
Hi, The feature of speculative execution in Cassandra 2.0 helps in this case. You can get further explanation on below link. http://www.datastax.com/dev/blog/rapid-read-protection-in-cassandra-2-0-2 Thanks! On Tue, Dec 6, 2016 at 10:13 AM, Sungju Hong wrote: > Hello, > > when I restart a node

Re: sstables keep growing on cassandra 2.1

2014-11-19 Thread Colin Kuo
Hi, Can you please firstly check the "nodetool compactionstats" during repair? I'm afraid that minor compaction may be blocked by whatever tasks that causes the number of SStable keep growing. On Sat, Nov 15, 2014 at 7:47 AM, James Derieg wrote: > Hi everyone, > I'm hoping someone can help me w

Re: decommissioning a cassandra node

2014-10-27 Thread Colin Kuo
Hi Tim, The node with IP 94 is leaving. Maybe something wrong happens during streaming data. You could use "nodetool netstats" on both nodes to monitor if there is any streaming connection stuck. Indeed, you could force remove the leaving node by shutting down it directly. Then, perform "nodetool

Re: unable to load data using sstableloader

2014-07-28 Thread Colin Kuo
Have you created the schema for these data files? I meant the schema should be created before you load these data file to C*. Here is the article for introduction of sstableloader that you could refer. http://www.datastax.com/documentation/cassandra/1.2/cassandra/tools/toolsBulkloader_t.html On

Re: How to restart bootstrap after a failed streaming due to Broken Pipe (1.2.16)

2014-06-09 Thread Colin Kuo
You can use "nodetool repair" instead. Repair is able to re-transmit the data which belongs to new node. On Tue, Jun 10, 2014 at 10:40 AM, Mike Heffner wrote: > Hi, > > During an attempt to bootstrap a new node into a 1.2.16 ring the new node > saw one of the streaming nodes periodically disap

Re: high pending compactions

2014-06-09 Thread Colin Kuo
As Jake suggested, you could firstly increase "compaction_throughput_mb_per_sec" and "concurrent_compactions" to suitable values if system resource is allowed. From my understanding, major compaction will internally acquire lock before running compaction. In your case, there might be a major compac

Re: Advice on how to handle corruption in system/hints

2014-06-09 Thread Colin Kuo
Colin <http://about.me/ColinKuo> Colin Kuo about.me/ColinKuo [image: Colin Kuo on about.me] <http://about.me/ColinKuo> On Mon, Jun 9, 2014 at 6:11 AM, Francois Richard wrote: > Hi everyone, > > We are running some Cassandra clusters (Usually a cluster of 5 nodes >

Starting up Cassandra occurred errors after upgrading Cassandra to 1.2.5 from 1.0.12

2013-05-29 Thread Colin Kuo
Hi All, We followed the upgrade guide( http://www.datastax.com/docs/1.2/install/upgrading) from Datastax web site and upgraded Cassadra to 1.2.5, but it occurred errors in system.log when starting up. After digging into code level, it looks like Cassandra found the file length of IndexSummary sst