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Posted to dev@lens.apache.org by "Rajat Khandelwal (JIRA)" <ji...@apache.org> on 2017/05/04 07:42:04 UTC

[jira] [Created] (LENS-1418) LensClient is not thread safe

Rajat Khandelwal created LENS-1418:
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             Summary: LensClient is not thread safe
                 Key: LENS-1418
                 URL: https://issues.apache.org/jira/browse/LENS-1418
             Project: Apache Lens
          Issue Type: Bug
          Components: client
            Reporter: Rajat Khandelwal
            Assignee: Rajat Khandelwal


Using one lens client to fire two queries in two threads results in discrepencies. LensClient has a {{Map<QueryHandle, LensStatement>}} and also has a cached instance of {{LensStatement}}. When two threads fire queries, both use the same statement object. {{LensStatement}} object in turn caches {{LensQuery}} Object. So whichever thread fired query last is the last one to set lens query inside statement causing {{LensClient.getStatement().getQuery()}} to return that query object for all threads. 



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