[jira] [Created] (KUDU-3352) Malfunction in Sockaddr::HashCode() could lead to running out of connections in a busy Kudu cluster

["Alexey Serbin (Jira)" <ji...@apache.org>]

Alexey Serbin created KUDU-3352:
-----------------------------------

             Summary: Malfunction in Sockaddr::HashCode() could lead to running out of connections in a busy Kudu cluster
                 Key: KUDU-3352
                 URL: https://issues.apache.org/jira/browse/KUDU-3352
             Project: Kudu
          Issue Type: Bug
          Components: client, master, tserver
    Affects Versions: 1.15.0, 1.14.0, 1.13.0
            Reporter: Alexey Serbin
            Assignee: Alexey Serbin


Since the {{Sockaddr}} class has been updated to handle various address families, an issue with uninitialized memory in the {{storage_.in.sin_zero}} started affecting the behavior of the {{Sockaddr::HashCode()}} method.

As the result, {{ReactorThread::FindOrStartConnection()}} would create a new connection to the specified remote even if a connection with the required credentials policy had already been established.  In a very busy Kudu cluster that could lead to running out of connections, where an attempt to establish a new connection would fail with {{EADDRNOTAVAIL}} error (Cannot assign requested address).

Credit goes to [~wzhou] for detecting and troubleshooting the issue.



--
This message was sent by Atlassian Jira
(v8.20.1#820001)