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https://issues.apache.org/jira/browse/LENS-574?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14614366#comment-14614366
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Yash Sharma commented on LENS-574:
----------------------------------
Rootcause:
HSQLDB's result set object is ResultSet.TYPE_FORWARD_ONLY by default- therefore
it blows up in checkNotForwardOnly.
Review board: https://reviews.apache.org/r/36188/
> NPE in TestLensDAO
> ------------------
>
> Key: LENS-574
> URL: https://issues.apache.org/jira/browse/LENS-574
> Project: Apache Lens
> Issue Type: Bug
> Reporter: Sushil Mohanty
>
> org.apache.lens.server.query.TestLensDAO.testLensServerDAO (from TestSuite)
> {CODE}
> org.apache.lens.server.api.error.LensException: null
> at org.hsqldb.jdbc.Util.notSupported(Unknown Source)
> at org.hsqldb.jdbc.JDBCResultSet.checkNotForwardOnly(Unknown Source)
> at org.hsqldb.jdbc.JDBCResultSet.beforeFirst(Unknown Source)
> at
> org.apache.commons.dbcp.DelegatingResultSet.beforeFirst(DelegatingResultSet.java:358)
> at
> org.apache.commons.dbcp.DelegatingResultSet.beforeFirst(DelegatingResultSet.java:358)
> at
> org.apache.lens.driver.jdbc.JDBCResultSet.seekToStart(JDBCResultSet.java:302)
> at
> org.apache.lens.driver.jdbc.JDBCResultSet.<init>(JDBCResultSet.java:83)
> at
> org.apache.lens.server.query.TestLensDAO.testLensServerDAO(TestLensDAO.java:82)
> {CODE}
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