[jira] [Commented] (THRIFT-1894) Thrift multi-threaded async Java Server using Java 7 AsynchronousChannelGroup

["Roger Meier (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/THRIFT-1894?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13877997#comment-13877997 ] 

Roger Meier commented on THRIFT-1894:
-------------------------------------

{noformat}
    [javac] Compiling 3 source files to /tmp/thrift-src/lib/java/build
    [javac] warning: [options] bootstrap class path not set in conjunction with -source 1.5
    [javac] /tmp/thrift-src/lib/java/src/org/apache/thrift/server/TAsyncThreadPoolServer.java:101: error: diamond operator is not supported in -source 1.5
    [javac]   private AtomicReference<State> state = new AtomicReference<>(State.STOPPED);
    [javac]                                                              ^
    [javac]   (use -source 7 or higher to enable diamond operator)
    [javac] /tmp/thrift-src/lib/java/src/org/apache/thrift/server/TAsyncThreadPoolServer.java:159: error: multi-catch statement is not supported in -source 1.5
    [javac]     } catch (IOException | InterruptedException | ExecutionException exc) {
    [javac]                          ^
    [javac]   (use -source 7 or higher to enable multi-catch statement)
    [javac] /tmp/thrift-src/lib/java/src/org/apache/thrift/transport/TFramedChannelTransport.java:141: error: multi-catch statement is not supported in -source 1.5
    [javac]     } catch (InterruptedException | ExecutionException exc) {
    [javac]                                   ^
    [javac]   (use -source 7 or higher to enable multi-catch statement)
    [javac] 3 errors
    [javac] 1 warning

> Thrift multi-threaded async Java Server using Java 7 AsynchronousChannelGroup
> -----------------------------------------------------------------------------
>
>                 Key: THRIFT-1894
>                 URL: https://issues.apache.org/jira/browse/THRIFT-1894
>             Project: Thrift
>          Issue Type: New Feature
>          Components: Java - Library
>    Affects Versions: 1.0
>         Environment: Windows/Linux/OS X
>            Reporter: Randy Abernethy
>             Fix For: 1.0
>
>         Attachments: 0001-Java-TAsyncThreadPoolServer-and-support-files.patch
>
>
> This is a Java async thread pool server which my shop would like to contribute to 1.0.
> This server creates a single thread pool to execute all client requests. Any thread may be dispatched to service any request on any connection. Async operations use direct ByteBuffers, allowing the underlying system to write directly to the server buffer in some JVMs. No memory is typically copied by the server, the Protocol reads directly from the I/O buffer. The HotSpot JVM implements AsynchronousChannelGroups with I/O completion ports on Windows, event port on Solaris, and epoll on Linux. The IOCP implementation makes a noticeable difference in some scale out scenarios on Windows. Have found this server to be good for large client counts and TThreadPoolServer to be a little better with lower client counts (our experience only of course). 
> In the tar:
> Server: TAsyncThreadPoolServer.java
> Channel: TChannelManager.java
> Transport: TFramedChannelTransport.java
> Test: TestAsyncThreadPoolServer.java
> Requires Java 7.
> Happy to field questions and turn patches if needed.



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