[jira] [Commented] (ZOOKEEPER-1871) Add an option to zkCli to wait for connection before executing commands

["Takashi Ohnishi (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-1871?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13911334#comment-13911334 ] 

Takashi Ohnishi commented on ZOOKEEPER-1871:
--------------------------------------------

Hi.

> We are having some scripts to create/delete znodes through commandline. But if getting the connection delays due to one of the node down, 
> then command will fail with connectionloss even though quorum is available.

We encountered the same situation. So, I want the proposed option, too!

I have attached a created patch for version 3.4.5.
This patch adds a option -waitforconnection to zkCli.sh and changes the usage of zkCli.sh as below.

{code}
   $ bin/zkCli.sh -server host:port -timeout sessionTimeout[ms] -waitforconnection waittimeout[ms] cmd args
{code}

zkCli.sh comes to wait for completion of connecting to a ZooKeeper server with the specified milliseconds timeout. 
Without the -waitforconnection option, zkCli.sh use a default value 30,000 millisecond. 

> Add an option to zkCli to wait for connection before executing commands
> -----------------------------------------------------------------------
>
>                 Key: ZOOKEEPER-1871
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1871
>             Project: ZooKeeper
>          Issue Type: Improvement
>            Reporter: Vinayakumar B
>
> Add an option to zkCli to wait for connection before executing any commands.
> This is helpful for the execution of inline commands.
> We are having some scripts to create/delete znodes through commandline. But if getting the connection delays due to one of the node down, then command will fail with connectionloss even though quorum is available.
> So I propose a commandline option (similar to -server and -timeout) "-waitforconnection" to wait for the connection before executing any commands.



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