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https://issues.apache.org/jira/browse/KAFKA-1017?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Swapnil Ghike updated KAFKA-1017:
---------------------------------

    Description: 
Reported by Jun Rao:

For over-partitioned topics, each broker could be the leader for at least 1 
partition. In the producer, we randomly select a partition to send the data. 
Pretty soon, each producer will establish a connection to each of the n 
brokers. Effectively, we increased the # of socket connections by a factor of 
n, compared to 0.7.

The increased number of socket connections increases the number of open file 
handles, this could come pretty  close to the OS limit if left unnoticed. 

  was:
For over-partitioned topics, each broker could be the leader for at least 1 
partition. In the producer, we randomly select a partition to send the data. 
Pretty soon, each producer will establish a connection to each of the n 
brokers. Effectively, we increased the # of socket connections by a factor of 
n, compared to 0.7.

The increased number of socket connections increases the number of open file 
handles, this could come pretty  close to the OS limit if left unnoticed. 

    
> High number of open file handles in 0.8 producer
> ------------------------------------------------
>
>                 Key: KAFKA-1017
>                 URL: https://issues.apache.org/jira/browse/KAFKA-1017
>             Project: Kafka
>          Issue Type: Bug
>            Reporter: Swapnil Ghike
>            Assignee: Swapnil Ghike
>
> Reported by Jun Rao:
> For over-partitioned topics, each broker could be the leader for at least 1 
> partition. In the producer, we randomly select a partition to send the data. 
> Pretty soon, each producer will establish a connection to each of the n 
> brokers. Effectively, we increased the # of socket connections by a factor of 
> n, compared to 0.7.
> The increased number of socket connections increases the number of open file 
> handles, this could come pretty  close to the OS limit if left unnoticed. 

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