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From "MaoYuan Xian (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HAMA-764) In SpillingQueue, spilling thread dos not start when messages number less than threshold
Date Thu, 13 Jun 2013 11:27:20 GMT

     [ https://issues.apache.org/jira/browse/HAMA-764?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

MaoYuan Xian updated HAMA-764:
------------------------------

    Description: 
In the SpillingDataOutputBuffer.SpillingStream, we can find the following implementations
to starting the spilling thread.
{code}
   private void checkSpillStart() throws IOException {
      if (bytesWritten_ >= thresholdSize_) {
        try {
          startSpilling();
        } catch (InterruptedException e) {
          throw new IOException("Internal error occured writing to buffer.", e);
        }
      }
    }
{code}

But I encountered the message loss, when total bytes written number is less than thresholdSize.
Because the spilling thread is not invoked, and handleSpilledBuffer method of SpilledDataProcessor
can not get the chance to run.

  was:
In the SpillingDataOutputBuffer.SpillingStream, we can find the following implementations
to starting the spilling thread.
{code}
   private void checkSpillStart() throws IOException {
      if (bytesWritten_ >= thresholdSize_) {
        try {
          startSpilling();
        } catch (InterruptedException e) {
          throw new IOException("Internal error occured writing to buffer.", e);
        }
      }
    }
{code}

But I encountered the message loss, when total bytes written number is less than thresholdSize.
Because the spilling thread in not invoked, and handleSpilledBuffer method of SpilledDataProcessor
can not get the chance to run.

    
> In SpillingQueue, spilling thread dos not start when messages number less than threshold
> ----------------------------------------------------------------------------------------
>
>                 Key: HAMA-764
>                 URL: https://issues.apache.org/jira/browse/HAMA-764
>             Project: Hama
>          Issue Type: Bug
>          Components: bsp core
>    Affects Versions: 0.7.0
>            Reporter: MaoYuan Xian
>
> In the SpillingDataOutputBuffer.SpillingStream, we can find the following implementations
to starting the spilling thread.
> {code}
>    private void checkSpillStart() throws IOException {
>       if (bytesWritten_ >= thresholdSize_) {
>         try {
>           startSpilling();
>         } catch (InterruptedException e) {
>           throw new IOException("Internal error occured writing to buffer.", e);
>         }
>       }
>     }
> {code}
> But I encountered the message loss, when total bytes written number is less than thresholdSize.
Because the spilling thread is not invoked, and handleSpilledBuffer method of SpilledDataProcessor
can not get the chance to run.

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