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Posted to dev@ambari.apache.org by "Dmytro Sen (JIRA)" <ji...@apache.org> on 2016/01/15 18:42:40 UTC

[jira] [Updated] (AMBARI-14694) Unnecessary multiple TreeMap creation

     [ https://issues.apache.org/jira/browse/AMBARI-14694?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dmytro Sen updated AMBARI-14694:
--------------------------------
    Description: 
In TimelineReadHelper
{code}
    TreeMap<Long, Double> sortedByTimeMetrics = new TreeMap(
      PhoenixHBaseAccessor.readMetricFromJSON(rs.getString("METRICS")));
{code}
but readMetricFromJSON returns the TreeMap

it can lead to memory wasting

  was:
In TimelineReadHelper
{code}
    TreeMap<Long, Double> sortedByTimeMetrics = new TreeMap(
      PhoenixHBaseAccessor.readMetricFromJSON(rs.getString("METRICS")));
{code}
but readMetricFromJSON returns the TreeMap


> Unnecessary multiple TreeMap creation
> -------------------------------------
>
>                 Key: AMBARI-14694
>                 URL: https://issues.apache.org/jira/browse/AMBARI-14694
>             Project: Ambari
>          Issue Type: Bug
>    Affects Versions: 2.2.1
>            Reporter: Dmytro Sen
>            Assignee: Dmytro Sen
>            Priority: Critical
>             Fix For: 2.4.0
>
>
> In TimelineReadHelper
> {code}
>     TreeMap<Long, Double> sortedByTimeMetrics = new TreeMap(
>       PhoenixHBaseAccessor.readMetricFromJSON(rs.getString("METRICS")));
> {code}
> but readMetricFromJSON returns the TreeMap
> it can lead to memory wasting



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