Re: Attached profiled data but need help understanding it

Hi Romain, I am using Cassandra version 3.0.9 and here is the generated report (Graphical view) of my thread dump as well!. Just send this over in case if it helps. Thanks, kant On Tue, Feb

Re: Attached profiled data but need help understanding it

Hi Romain, Thanks again. My response are inline. kant On Tue, Feb 28, 2017 at 10:04 AM, Romain Hardouin wrote: > > we are currently using 3.0.9. should we use 3.8 or 3.10 > > No, don't use 3.X in production unless you really need a major feature. > I would advise to stick to 3.0.X (i.e. 3.0.1

Re: Attached profiled data but need help understanding it

> we are currently using 3.0.9.  should we use 3.8 or 3.10 No, don't use 3.X in production unless you really need a major feature.I would advise to stick to 3.0.X (i.e. 3.0.11 now).You can backport CASSANDRA-11966 easily but of course you have to deploy from source as a prerequisite. > I haven't

question of keyspace that just disappeared

Hey Cassandra Users, We recently encountered an issue with a keyspace just disappeared. I was curious if anyone has had this occur before and can provide some insight. We are using cassandra 3.10. 2 DCs 3 nodes each. The data was still located in the storage folder but is not located inside Cass

Re: Is periodic manual repair necessary?

Hi Jayesh, Your statements are mostly right, except: Yes, compactions do purge tombstones but that *does not avoid resurrection*. A resurrection takes place in this situation: Node A: Key A is written Key A is deleted Node B: Key A is written - Deletion never happens for example because of a dro

Re: Is periodic manual repair necessary?

Thanks - getting a better picture of things. So "entropy" is tendency of a C* datastore to be inconsistent due to writes/updates not taking place across ALL nodes that carry replica of a row (can happen if nodes are down for maintenance) It can also happen due to node crashes/restarts that can r

Re: How to find total data size of a keyspace.

Nodetool status key space_name . On Tue, Feb 28, 2017 at 4:53 AM anuja jain wrote: > Hi, > Using nodetool cfstats gives me data size of each table/column family and > nodetool ring gives me load of all keyspace in cluster but I need total > data size of one keyspace in the cluster. How can I get

How to find total data size of a keyspace.

Hi, Using nodetool cfstats gives me data size of each table/column family and nodetool ring gives me load of all keyspace in cluster but I need total data size of one keyspace in the cluster. How can I get that?

Very long delay on "Writing Memtable-local@xyz.."

Hi all, anyone knows what exactly happens when I see *Writing Memtable-local@57746066(0.472KiB serialized bytes, 15 ops, 0%/0% of on/off-heap limit)* during startup of C* processes in the cassandra-log? When updating our 10-node cluster I see this for +10mins as last log entry. There's some diskio

Fwd: Node failure due to Incremental repair

Hi, Recently I have enabled incremental repair in one of my test cluster setup which consists of 8 nodes(DC1 - 4, DC2 - 4) with C* version of 2.1.13. Currently, I am facing node failure scenario in this cluster with the following exception during the incremental repair process exception occurred d

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