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From "Benedict (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-7724) Native-Transport threads get stuck in StorageProxy.preparePaxos with no one making progress
Date Sat, 13 Sep 2014 10:36:33 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-7724?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14132628#comment-14132628
] 

Benedict commented on CASSANDRA-7724:
-------------------------------------

It might be worth trying the (beta) patch for CASSANDRA-7542, to see if that has any impact.
If it does, we could accelerate polishing it off.

FTR, it is not totally bizarre that all of them should be waiting - if another node is making
progress on a round, all of the threads on a given node could be paused

> Native-Transport threads get stuck in StorageProxy.preparePaxos with no one making progress
> -------------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-7724
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7724
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>         Environment: Linux 3.13.11-4 #4 SMP PREEMPT x86_64 Intel(R) Core(TM) i7 CPU 950
@ 3.07GHz GenuineIntel 
> java version "1.8.0_05"
> Java(TM) SE Runtime Environment (build 1.8.0_05-b13)
> Java HotSpot(TM) 64-Bit Server VM (build 25.5-b02, mixed mode)
> cassandra 2.0.9
>            Reporter: Anton Lebedevich
>         Attachments: cassandra.threads2
>
>
> We've got a lot of write timeouts (cas) when running 
> "INSERT INTO cas_demo(pri_id, sec_id, flag, something) VALUES(?, ?, ?, ?) IF NOT EXISTS"
>  from 16 connections in parallel using the same pri_id and different sec_id.
> Doing the same from 4 connections in parallel works ok.
> All configuration values are at their default values.
> CREATE TABLE cas_demo (
>   pri_id varchar,
>   sec_id varchar,
>   flag boolean,
>   something set<varchar>,
>   PRIMARY KEY (pri_id, sec_id)
> );
> CREATE INDEX cas_demo_flag ON cas_demo(flag);
> Full thread dump is attached. 



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