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From "Sean Busbey (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (ACCUMULO-4533) TraceServer should not abort if trace table exists
Date Wed, 07 Dec 2016 15:34:58 GMT

     [ https://issues.apache.org/jira/browse/ACCUMULO-4533?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sean Busbey reassigned ACCUMULO-4533:
-------------------------------------

    Assignee: Sean Busbey

> TraceServer should not abort if trace table exists
> --------------------------------------------------
>
>                 Key: ACCUMULO-4533
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-4533
>             Project: Accumulo
>          Issue Type: Bug
>          Components: trace
>    Affects Versions: 1.7.1, 1.7.2, 1.8.0
>         Environment: impacts 1.7.0-1.7.2, 1.8.0
>            Reporter: Sean Busbey
>            Assignee: Sean Busbey
>             Fix For: 1.7.3, 1.8.1
>
>
> h3. description
> On start up, the TraceServer attempts to ensure that the trace table exists.
> {code}
>         connector = serverConfiguration.getInstance().getConnector(principal, at);
>         if (!connector.tableOperations().exists(tableName)) {
>           connector.tableOperations().create(tableName);
>           IteratorSetting setting = new IteratorSetting(10, "ageoff", AgeOffFilter.class.getName());
>           AgeOffFilter.setTTL(setting, 7 * 24 * 60 * 60 * 1000l);
>           connector.tableOperations().attachIterator(tableName, setting);
>         }
> {code}
> The race condition between checking existence and creating the table ought not matter,
since we're in a big loop that is supposed to retry on any problems.
> However, that loop expressly catches {{RuntimeException}} and {{TableExistsException}}
is not a {{RuntimeException}} so currently the exception propagates and kills the server.
> h3. workaround
> restart any failed trace servers, since the one that won the race condition should have
finished set up properly.
> alternatively, manually create the trace table prior to starting any trace servers.



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