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https://issues.apache.org/jira/browse/HAMA-789?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13724854#comment-13724854
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Edward J. Yoon commented on HAMA-789:
-------------------------------------
Below is unsafe.
{code}
child() {
....
final BSPTask task = (BSPTask) umbilical.getTask(taskid);
- int peerPort = umbilical.getAssignedPortNum(taskid);
+ int peerPort = Constants.DEFAULT_PEER_PORT;
+ peerPort = BSPNetUtils.getNextAvailable(peerPort);
}
{code}
> BspPeer launched fail because port is bound by others
> -----------------------------------------------------
>
> Key: HAMA-789
> URL: https://issues.apache.org/jira/browse/HAMA-789
> Project: Hama
> Issue Type: Bug
> Components: bsp core
> Affects Versions: 0.6.2
> Reporter: MaoYuan Xian
> Assignee: Suraj Menon
> Fix For: 0.6.3
>
> Attachments: HAMA-789.patch
>
>
> In GroomServer, we call BSPNetUtils.getNextAvailable to assigning the bsppeer
> listening port. After figures out an available port, the GroomServer release
> the port and launches the BspPeer(Child), then the child listens to this port.
> However, during the GroomServer release the port and peer listens the port,
> if other process in the operation system binds to the same port occasionally,
> the bsppeer will fail to start up because of "Address already in use"
> exception.
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