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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-5179) Hinted handoff sends over 1000 rows for one column change
Date Mon, 18 Mar 2013 15:46:15 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-5179?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13605227#comment-13605227
] 

Jonathan Ellis commented on CASSANDRA-5179:
-------------------------------------------

If we time out we should probably cease further delivery attempts, to avoid hammering a node
that is behind.
                
> Hinted handoff sends over 1000 rows for one column change
> ---------------------------------------------------------
>
>                 Key: CASSANDRA-5179
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5179
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 1.2.2
>         Environment: Windows 7
> Java 1.6u38
>            Reporter: Antti Koivisto
>            Assignee: Aleksey Yeschenko
>             Fix For: 1.2.4
>
>         Attachments: cassandra_receiver.log, cassandra_sender.log
>
>
> We have a small test environment with two datacenters (DC1 and DC2) running on Windows
7 laptops.
> Both datacenters have one node. We use network topology strategy to replicate all data
to both datacenters.
> We started with empty db. 
> 1. Created a keyspace with strategy options [DC1:1, DC2:1]
> 2. Added one row to a column family with CLI to DC1. Change was replicated to DC2.
> 3. Disconnected network cable from DC2.
> 4. Gossiper noticed, that other DC is dead.
> 5. Added another row to DC1.
> 6. Reconnected cable on DC2.
> 7. DC1 started hinted handoff for DC2.
> 8. Hinted handoff is finished with message: "Finished hinted handoff of 1969 rows to
endpoint <DC2 ip>"
> We repeated test with same results on Linux cluster with Cassandra 1.2.0. 
> On Cassandra 1.1.5 Linux cluster, only one row was sent to endpoint. "Finished hinted
handoff of 1 rows to endpoint <DC2 ip>"

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