[jira] [Updated] (ACCUMULO-3875) Unnecessary synchronization and conditionals in MiniAccumuloClusterControl

["Christopher Tubbs (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ACCUMULO-3875?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Christopher Tubbs updated ACCUMULO-3875:
----------------------------------------
    Summary: Unnecessary synchronization and conditionals in MiniAccumuloClusterControl  (was: Unnecessary synchronization and conditionals in MiniAccumuloClusterControl )

> Unnecessary synchronization and conditionals in MiniAccumuloClusterControl
> --------------------------------------------------------------------------
>
>                 Key: ACCUMULO-3875
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-3875
>             Project: Accumulo
>          Issue Type: Bug
>          Components: mini
>    Affects Versions: 1.7.0
>            Reporter: Josh Elser
>            Assignee: Josh Elser
>              Labels: coverity
>             Fix For: 1.6.3, 1.7.1, 1.8.0
>
>          Time Spent: 0.5h
>  Remaining Estimate: 0h
>
> MiniAccumuloClusterControl has a few areas that could be cleaned up
> The following null check on {{tabletServerProcesses}} is unnecessary.
> {code}
>       case TABLET_SERVER:
>         if (tabletServerProcesses != null) {
>           synchronized (tabletServerProcesses) {
>             try {
>               for (Process tserver : tabletServerProcesses) {
>                 try {
>                   cluster.stopProcessWithTimeout(tserver, 30, TimeUnit.SECONDS);
>                 } catch (ExecutionException e) {
>                   log.warn("TabletServer did not fully stop after 30 seconds", e);
>                 } catch (TimeoutException e) {
>                   log.warn("TabletServer did not fully stop after 30 seconds", e);
>                 } catch (InterruptedException e) {
>                   Thread.currentThread().interrupt();
>                 }
>               }
>             } finally {
>               tabletServerProcesses.clear();
>             }
>           }
>         }
>         break;
> {code}
> {{tabletServerProcesses}} should probably be {{final}} and likely does not need to be a {{synchronizedList}} because the data structure is used for synchronization before each access anyways.
> {code}
>   List<Process> tabletServerProcesses = Collections.synchronizedList(new ArrayList<Process>());
> {code}



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