[jira] Commented: (THRIFT-171) Expected blocking from TSocket but didn't get it

["Bryan Duxbury (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/THRIFT-171?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12649481#action_12649481 ] 

Bryan Duxbury commented on THRIFT-171:
--------------------------------------

Dave, did you ever get any more information about this issue?

> Expected blocking from TSocket but didn't get it
> ------------------------------------------------
>
>                 Key: THRIFT-171
>                 URL: https://issues.apache.org/jira/browse/THRIFT-171
>             Project: Thrift
>          Issue Type: Bug
>          Components: Library (Java), Library (Ruby)
>    Affects Versions: 0.1
>         Environment: CentOS 4.x
>            Reporter: Dave Dupre
>         Attachments: try.zip
>
>
> I have a Thrift server built in Ruby on Rails. It uses the TSimpleServer class since my server is using Rails to generate HTML (Rails view code expects to be single threaded).  I have two clients: one in Java and one in Ruby.  Here is what I see:
> Ruby client:
> # Usual init code straight from the tutorial here
> transport.open
> 1000.times { client.my_method }
> transport.close
> The Java client is basically the same.  Unfortunately, I see two different behaviors when running multiple client instances.  With a Ruby client, execute client A, and it starts processing normally.  Execute client B while client A is still running, and it blocks at transport.open until client A completes.  This is what I expected.  However, if I do the same thing with Java clients, both clients proceed in parallel.  Unfortunately, this gets the server very confused and into a really bad state.  I'm using TSocket which should be doing blocking I/O, but that is not what I'm seeing happen.
> Is there some magic that I can do to make this work?  Right now, I use configuration to ensure that only one Java client thread/process is allowed to talk to my Ruby server, but this is a total hack.  Switching to TThreadedServer makes blocking go away, but I'm nervous about what that will mean to the Rails controller and view code.  FYI, my server allows me to generate HTML views via Thrift.  If it was a pure Ruby server, then I would not be concerned, but since so much is dependent on code that usually assumes to be single threaded, I'm concerned about introducing bugs.

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