cassandra-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Jay Zhuang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-13548) system.paxos improvements
Date Wed, 31 May 2017 01:03:04 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-13548?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16030457#comment-16030457
] 

Jay Zhuang commented on CASSANDRA-13548:
----------------------------------------

How about making Paxos TTL configurable: https://github.com/apache/cassandra/blob/trunk/src/java/org/apache/cassandra/db/SystemKeyspace.java#L1067
? Why it has to store at least 3 hours Paxos data?

> system.paxos improvements
> -------------------------
>
>                 Key: CASSANDRA-13548
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-13548
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Jeff Jirsa
>            Priority: Minor
>             Fix For: 4.x
>
>
> There are a few practical changes we can make to {{system.paxos}} that will improve (especially
read) performance for LWT:
> - We should decrease the compression chunk size for situations where we have to go to
disk
> - We can change the primary key structure so that the row key and CFID are both part
of the partition key, which will decrease LCS compaction activity in use cases where a row
key is common across tables, and one table is updated more frequently than the other.



--
This message was sent by Atlassian JIRA
(v6.3.15#6346)

---------------------------------------------------------------------
To unsubscribe, e-mail: commits-unsubscribe@cassandra.apache.org
For additional commands, e-mail: commits-help@cassandra.apache.org


Mime
View raw message