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Posted to user@cassandra.apache.org by Даниел Симеонов <ds...@gmail.com> on 2010/05/10 15:09:51 UTC

Re: busy thread on IncomingStreamReader ?

Hi,
  I've experienced the same problem, two nodes got stuck with CPU at 99% and
the following source code from IncomingStreamReader class:

while (bytesRead < pendingFile.getExpectedBytes()) {
                bytesRead += fc.transferFrom(socketChannel, bytesRead,
FileStreamTask.CHUNK_SIZE);
                pendingFile.update(bytesRead);
            }

the cycle seems to loop forever...
after both Cassandra instances were restarted the problem didn't occur.

Best regards, Daniel.

Re: busy thread on IncomingStreamReader ?

Posted by Ingram Chen <in...@gmail.com>.

We have this problem initially. but it disappeared after several days'
operation. so we have no chance to investigate problems more.


2010/5/10 Даниел Симеонов <ds...@gmail.com>

> Hi,
>   I've experienced the same problem, two nodes got stuck with CPU at 99%
> and the following source code from IncomingStreamReader class:
>
> while (bytesRead < pendingFile.getExpectedBytes()) {
>                 bytesRead += fc.transferFrom(socketChannel, bytesRead,
> FileStreamTask.CHUNK_SIZE);
>                 pendingFile.update(bytesRead);
>             }
>
> the cycle seems to loop forever...
> after both Cassandra instances were restarted the problem didn't occur.
>
> Best regards, Daniel.
>



-- 
Ingram Chen
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