Re: Re: Increased read latency with Cassandra >= 3.11.7

2020-09-14 Thread Sagar Jambhulkar
That is odd. I thought maybe lower version had a bigger custom cache or some other setting missed in the upgrade. On Mon, 14 Sep 2020, 23:00 Nicolai Lune Vest, wrote: > While cache configuration stays the same, cache hit rate for both, the > chunk cache and the key cache are worse (but still ok)

Re: Cassandra scale-out with no traffic on newly joined nodes

2020-09-14 Thread Sandeep Nethi
Small correction in cassandra driver usage, Driver used: Spring boot ( org.springframework.boot:spring-boot-starter-data-cassandra) Version: 2.3.2.RELEASE Are there any differences between spring boot (I think it's based on datastax cql driver) and Datastax core driver load balancing policies? T

Re: Cassandra timeout during read query

2020-09-14 Thread Aaron Ploetz
Deepak, Can you reply with: 1) The query you are trying to run. 2) The table definition (PRIMARY KEY, specifically). 3) Maybe a little description of what the table is designed to do. 4) How much data you're expecting returned (both # of rows and data size). Thanks, Aaron On Mon, Sep 14, 2020

Cassandra timeout during read query

2020-09-14 Thread Deepak Sharma
Hi There, We are running into a strange issue in our Cassandra Cluster where one specific query is failing with following error: Cassandra timeout during read query at consistency QUORUM (3 responses were required but only 0 replica responded) This is not a typical query read timeout that we kno

Re: Increased read latency with Cassandra >= 3.11.7

2020-09-14 Thread Sagar Jambhulkar
Maybe compare the cache size see if anything different in two versions? On Mon, 14 Sep 2020, 19:21 Nicolai Lune Vest, wrote: > Dear Cassandra community, > > after upgrading my Cassandra nodes from version 3.11.6 to either 3.11.7 > or 3.11.8 I experience a significant increase in read latency. >

Increased read latency with Cassandra >= 3.11.7

2020-09-14 Thread Nicolai Lune Vest
Dear Cassandra community, after upgrading my Cassandra nodes from version 3.11.6 to either 3.11.7 or 3.11.8 I experience a significant increase in read latency. With 3.11.6 average read latency is ~0.35 ms. With 3.11.7 average read latency increases to ~2.9 ms, almost 10 times worse! This behavi

Re: Cassandra scale-out with no traffic on newly joined nodes

2020-09-14 Thread Sandeep Nethi
Thanks Erick. We are using datastax java driver ( https://docs.datastax.com/en/developer/java-driver/). Driver version number: 3.3.0 C* version: 3.11.6 Regards, Sandeep On Sat, Sep 12, 2020 at 2:41 PM Erick Ramirez wrote: > That would be my last option to add a new host as contant point but