[ https://issues.apache.org/jira/browse/ACCUMULO-4557?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Christopher Tubbs resolved ACCUMULO-4557. ----------------------------------------- Resolution: Not A Problem Fix Version/s: (was: 1.7.4) (was: 1.9.0) (was: 2.0.0) No response from the reporter. Closing as "Not A Problem" for now. Please create a new issue or pull request at https://github.com/apache/accumulo/issues if the problem persists. > Instance API should state when returning null is expected. > ---------------------------------------------------------- > > Key: ACCUMULO-4557 > URL: https://issues.apache.org/jira/browse/ACCUMULO-4557 > Project: Accumulo > Issue Type: Bug > Components: client > Affects Versions: 1.7.1, 1.7.2, 1.8.0 > Reporter: Sean Busbey > Priority: Critical > > This is an issue at least in 1.6.0+. Ran into during ACCUMULO-4556. > In that case the TablesServlet is making use of Instance to get root tablet > location information via the Instance interface. The API for > {{getRootTablet}} in master is: > {code} > /** > * Returns the location of the tablet server that is serving the root > tablet. > * > * @return location in "hostname:port" form > */ > String getRootTabletLocation(); > {code} > When the root tablet is offline, all of our current implementations return > {{null}}. The data structure used in TablesServlet can't handle nulls, so the > code fails with an NPE. > We should review the current implementations for Instance and update the API > to include details on the circumstances where a {{null}} will be returned > from all of the defined methods. -- This message was sent by Atlassian JIRA (v7.6.3#76005)