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Posted to commits@cassandra.apache.org by "Brandon Williams (Jira)" <ji...@apache.org> on 2020/02/24 12:20:00 UTC
[jira] [Assigned] (CASSANDRA-15593) seems reading repair bug
[ https://issues.apache.org/jira/browse/CASSANDRA-15593?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Brandon Williams reassigned CASSANDRA-15593:
--------------------------------------------
Assignee: (was: Aleksey Yeschenko)
> seems reading repair bug
> ------------------------
>
> Key: CASSANDRA-15593
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15593
> Project: Cassandra
> Issue Type: Bug
> Reporter: Antonio
> Priority: Normal
>
> cassandra version:2.1.15
> i have one dc and 3nodes
> 1. create KEYSPACE test WITH replication = \{'class': 'NetworkTopologyStrategy', 'DC1':'3' } and durable_writes = 'true';
> 2. create table test(a int , b int , c int , primary key(a)) with dclocal_read_repair_chance = 1.0;
> 3. insert one row into table test,instert into test(a, b, c) values (1, 1, 1); and remove sstable on two nodes and result below:
> node1:have correct row 1 1 1
> node2:doesn't have rf
> node3:doesn't have rf
> 4. and i use local_one select one by one like this:
> node1 un,node2 dn,node3 dn:return 1 1 1
> node1 dn,node2 un,node3 dn:return null
> node1 dn,node2 dn,node3 dn:return null
> this prove node1 have correct rf
> 5. and i let all node un,user local_quarum to select , select * from test where a = 1;
> but the read repair does't work every time(i test many times),that's the problem(same in 3.0.15)
>
> i hope if i set dclocal_read_repair_chance = 1.0,every time i read by local_quarum, if any rf digest does't match,read repair will work,and repair all nodes
>
> i.m not sure does's the problem happends in this code()
> wish for your reply,thanks
> public void response(MessageIn<TMessage> message)
> {
> resolver.preprocess(message); int n = waitingFor(message)
> ? recievedUpdater.incrementAndGet(this)
> : received; if (n >= blockfor && resolver.isDataPresent())
> {
> ////this mean if return responses >= rf/2 +1 and a data response return,it start compare,does't all response
> condition.signalAll(); // kick off a background digest comparison if this is a result that (may have) arrived after // the original resolve that get() kicks off as soon as the condition is signaled if (blockfor < endpoints.size() && n == endpoints.size())
> {
> TraceState traceState = Tracing.instance.get(); if (traceState != null)
> traceState.trace("Initiating read-repair");
> StageManager.getStage(Stage.READ_REPAIR).execute(new AsyncRepairRunner(traceState));
> }
> }
> }
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