[jira] [Resolved] (CALCITE-2782) Use server time zone by default if time zone is not specified in the user connection string

["Jesus Camacho Rodriguez (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CALCITE-2782?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jesus Camacho Rodriguez resolved CALCITE-2782.
----------------------------------------------
       Resolution: Fixed
    Fix Version/s: 1.19.0

Fixed in [c978304|https://gitbox.apache.org/repos/asf?p=calcite.git;a=commit;h=c978304]. Thanks [~jszeluga]!

> Use server time zone by default if time zone is not specified in the user connection string
> -------------------------------------------------------------------------------------------
>
>                 Key: CALCITE-2782
>                 URL: https://issues.apache.org/jira/browse/CALCITE-2782
>             Project: Calcite
>          Issue Type: Bug
>          Components: druid
>    Affects Versions: 1.18.0
>            Reporter: Justin Szeluga
>            Assignee: Julian Hyde
>            Priority: Major
>             Fix For: 1.19.0
>
>
> The default value for BuiltInConnectionProperty.TIME_ZONE is null. If the timezone is not set in the properties then the null is returned and a NullPointerException is thrown when PeriodGranularity initializes.
> {code:java}
> Caused by: java.lang.RuntimeException: Error while applying rule DruidProjectRule, args [rel#303:LogicalProject.NONE.[](input=RelSubset#145,EXPR$0=EXTRACT(FLAG(DAY), $0)), rel#213:DruidQuery.BINDABLE.[](table=[adhoc, bach.sign_ctrl_f],intervals=[2019-01-08T00:00:00.000Z/3000-01-01T00:00:00.000Z])]
>     at org.apache.calcite.plan.volcano.VolcanoRuleCall.onMatch(VolcanoRuleCall.java:236)
>     at org.apache.calcite.plan.volcano.VolcanoPlanner.findBestExp(VolcanoPlanner.java:641)
>     at org.apache.calcite.tools.Programs.lambda$standard$3(Programs.java:298)
>     at org.apache.calcite.tools.Programs$SequenceProgram.run(Programs.java:358)
>     at org.apache.calcite.prepare.Prepare.optimize(Prepare.java:189)
>     at org.apache.calcite.prepare.Prepare.prepareSql(Prepare.java:320)
>     at org.apache.calcite.prepare.Prepare.prepareSql(Prepare.java:231)
>     at org.apache.calcite.prepare.CalcitePrepareImpl.prepare2_(CalcitePrepareImpl.java:772)
>     at org.apache.calcite.prepare.CalcitePrepareImpl.prepare_(CalcitePrepareImpl.java:636)
>     at org.apache.calcite.prepare.CalcitePrepareImpl.prepareSql(CalcitePrepareImpl.java:606)
>     at org.apache.calcite.jdbc.CalciteConnectionImpl.parseQuery(CalciteConnectionImpl.java:229)
>     at org.apache.calcite.jdbc.CalciteMetaImpl.prepareAndExecute(CalciteMetaImpl.java:550)
>     at org.apache.calcite.avatica.AvaticaConnection.prepareAndExecuteInternal(AvaticaConnection.java:675)
>     at org.apache.calcite.avatica.AvaticaStatement.executeInternal(AvaticaStatement.java:156)
>     ... 14 more
> Caused by: java.lang.NullPointerException
>     at java.util.Objects.requireNonNull(Unknown Source)
>     at org.apache.calcite.adapter.druid.Granularities$PeriodGranularity.<init>(Granularities.java:93)
>     at org.apache.calcite.adapter.druid.Granularities$PeriodGranularity.<init>(Granularities.java:85)
>     at org.apache.calcite.adapter.druid.Granularities.createGranularity(Granularities.java:57)
>     at org.apache.calcite.adapter.druid.DruidDateTimeUtils.extractGranularity(DruidDateTimeUtils.java:331)
>     at org.apache.calcite.adapter.druid.DruidQuery.toDruidColumn(DruidQuery.java:273)
>     at org.apache.calcite.adapter.druid.DruidQuery.computeProjectAsScan(DruidQuery.java:763)
>     at org.apache.calcite.adapter.druid.DruidRules$DruidProjectRule.onMatch(DruidRules.java:298)
>     at org.apache.calcite.plan.volcano.VolcanoRuleCall.onMatch(VolcanoRuleCall.java:212)
>     ... 27 more
> {code}
> In tests, org.apache.calcite.test.CalciteAssert#assertQuery sets the timezone to UTC hiding the problem. When I issue queries from DBeaver it fails because of the NPE



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