[jira] [Commented] (THRIFT-3737) Improve TSocket isOpen() implementation to give more accurate connection status.

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/THRIFT-3737?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15313645#comment-15313645 ] 

ASF GitHub Bot commented on THRIFT-3737:
----------------------------------------

Github user cherrot commented on the issue:

    https://github.com/apache/thrift/pull/945
  
    It seems that a `sock.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)` could solve most unhealthy connection problems ;)


> Improve TSocket isOpen() implementation to give more accurate connection status.
> --------------------------------------------------------------------------------
>
>                 Key: THRIFT-3737
>                 URL: https://issues.apache.org/jira/browse/THRIFT-3737
>             Project: Thrift
>          Issue Type: Bug
>          Components: Python - Library
>            Reporter: Cherrot Luo
>              Labels: patch
>   Original Estimate: 0h
>  Remaining Estimate: 0h
>
> h2. Description
> Typically isOpen() of TSocket.py in python lib would *ALWAYS* return true, even if the underlying TCP connection has been closed or reset by the peer, unless you manually invoke its close() method.
> This is because the isOpen method takes a simple but kind of "irresponsible" way to judge connection status:
> {code:title=TSocket.py}
> def isOpen(self):
>     return self.handle is not None
> {code}
> This may affect the downstream lib/tools' implementation to offer a *reliable* transport instance. 
> For example, in [happybase|https://github.com/wbolster/happybase] (a developer-friendly Python library to interact with Apache HBase), it use isOpen() to judge whether it neccessary to reopen the connection in its [connection|https://github.com/wbolster/happybase/blob/9cbd718c10a3089f234f1eac1236b631e1f8e7cd/happybase/connection.py#L164] and connection pool.
> h2. Fix
> I've sent a github [Pull Request|https://github.com/apache/thrift/pull/945]



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