Re: Cassandra 3.2.1: Memory leak?

In my case, all nodes seem to be constantly logging messages like these: DEBUG [GossipStage:1] 2016-03-12 17:41:19,123 FailureDetector.java:456 - Ignoring interval time of 2000928319 for /10.212.18.170 What does that mean? Thanks a lot, Mohamed. On Sat, Mar 12, 2016 at 5:39 PM, Mohamed Lrhazi

Re: Cassandra 3.2.1: Memory leak?

Oh wow, similar behavior with different version all together!! On Sat, Mar 12, 2016 at 5:28 PM, ssiv...@gmail.com wrote: > Hi, I'll duplicate here my email with the same issue > > " > > > *I have 7 nodes of C* v2.2.5 running on CentOS 7 and using jemalloc for > dynamic storage allocation. Use on

Re: Cassandra 3.2.1: Memory leak?

Hi, I'll duplicate here my email with the same issue "/I have 7 nodes of C* v2.2.5 running on CentOS 7 and using jemalloc for dynamic storage allocation. Use only one keyspace and one table with Leveled compaction strategy. I've loaded ~500 GB of data into the cluster with replication factor e

Cassandra 3.2.1: Memory leak?

Hello, We installed Datastax community edition, on 8 nodes, RHEL7. We inserted some 7 billion rows into a pretty simple table. the inserts seem to have completed without issues. but ever since, we find that the nodes reliably run out of RAM after few hours, without any user activity at all. No rea

Re: ntpd clock sync

but what I'm saying is that every second will still hit. It's just that that second will only last for 0.8s. So to the code above the OS and even the shell level system calls, there is no difference. The difference is very lo level - interrupts come in every micro-second or so from the CPU and t

Re: ntpd clock sync

I believe K is asking whether he can sync up the clock now because he's concerned about losing data, as 30-40 seconds is pretty bad. On Sat, Mar 12, 2016 at 8:57 AM, Spencer Brown wrote: > NTP gradually speeds or slows the clock to arrive at actual time. So the > clock still hits every second b

Re: Strategy for dividing wide rows beyond just adding to the partition key

Generally, secondary indexes are not recommended in Cassandra. Query tables and/or materialized views are the recommended alternative. But it all depends on the specific nature of the queries and the cardinality of the data. Generally, Cassandra is ideal for only two use cases (access patterns rea

Re: Strategy for dividing wide rows beyond just adding to the partition key

Our analytics currently pulls in all the data for a single sensor reading as we use it in its entirety during signal processing. We may add secondary indices to the table in the future to pull in broadly classified data, but right now, our only goal is this bulk retrieval. From: Jack Krupa

Re: Strategy for dividing wide rows beyond just adding to the partition key

Hi Carlos, Thanks for the suggestions. We are having partition size issues and that was why we started to do custom sharding/partition division based on time. As you mentioned, we are having problems with identification. Its the identification of shard range that we need to understand and our da

Re: Achilles not picking cassandra ConsistencyLevel

Just replied. The behavior is normal, when using TypedQuery or NativeQuery, since you are crafting the query yourself, it is your responsibility to set query options (consistency, timestamp, retry policy ) on the native Statement object. Achilles only executes the statement and map native Row

Re: ntpd clock sync

NTP gradually speeds or slows the clock to arrive at actual time. So the clock still hits every second but 1s may really be 0.8s or 1.2s. In your case, it will sync up within a day. NTP is very clever so you never have newer files back-dated to be older than older files or vice versa. Spencer

Re: Compaction Filter in Cassandra

We don't have anything like that, do you have a specific use case in mind? Could you create a JIRA ticket and we can discuss there? /Marcus On Sat, Mar 12, 2016 at 7:05 AM, Dikang Gu wrote: > Hello there, > > RocksDB has the feature called "Compaction Filter" to allow application to > modify/d

Re: Achilles not picking cassandra ConsistencyLevel

Posted on below link. https://groups.google.com/forum/#!topic/cassandra-achilles/pSTcwVshMYE Thanks - Atul Saroha *Sr. Software Engineer* *M*: +91 8447784271 *T*: +91 124-415-6069 *

Re: Stratio’s Cassandra Lucene Index

Hi, Stratio’s Cassandra Lucene index plugin is currently used in production by several Stratio customers in banking, insurance, security, media, etc. The main usage is for analytics, with and without Spark. It is also used in some near-real-time

Re: Achilles not picking cassandra ConsistencyLevel

It's better to post your question at the dedicated mailing list for Achilles: https://groups.google.com/forum/?hl=fr#!forum/cassandra-achilles To enable to help you further, please provide some DML logs at runtime: https://github.com/doanduyhai/Achilles/wiki/Statements-Logging-and-Tracing#global-s