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https://issues.apache.org/jira/browse/IGNITE-855?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14530179#comment-14530179
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Sergi Vladykin commented on IGNITE-855:
---------------------------------------
Please review in ignite-855
> Explain does not work
> ---------------------
>
> Key: IGNITE-855
> URL: https://issues.apache.org/jira/browse/IGNITE-855
> Project: Ignite
> Issue Type: Bug
> Components: SQL
> Affects Versions: sprint-4
> Reporter: Alexey Kuznetsov
> Assignee: Yakov Zhdanov
> Priority: Blocker
> Fix For: sprint-4
>
>
> execute Explain SELECT * FROM Person
> and got following stack trace:
> {code}
> javax.cache.CacheException: java.lang.ClassCastException:
> org.h2.command.dml.Explain cannot be cast to org.h2.command.dml.Query
> at
> org.apache.ignite.internal.processors.cache.IgniteCacheProxy.query(IgniteCacheProxy.java:522)
> at
> org.apache.ignite.internal.visor.query.VisorQueryJob.run(VisorQueryJob.java:106)
> at
> org.apache.ignite.internal.visor.query.VisorQueryJob.run(VisorQueryJob.java:39)
> at org.apache.ignite.internal.visor.VisorJob.execute(VisorJob.java:67)
> at
> org.apache.ignite.internal.processors.job.GridJobWorker$2.call(GridJobWorker.java:482)
> at
> org.apache.ignite.internal.util.IgniteUtils.wrapThreadLoader(IgniteUtils.java:6119)
> at
> org.apache.ignite.internal.processors.job.GridJobWorker.execute0(GridJobWorker.java:476)
> at
> org.apache.ignite.internal.processors.job.GridJobWorker.body(GridJobWorker.java:429)
> at
> org.apache.ignite.internal.util.worker.GridWorker.run(GridWorker.java:108)
> at
> org.apache.ignite.internal.processors.job.GridJobProcessor.processJobExecuteRequest(GridJobProcessor.java:1052)
> at
> org.apache.ignite.internal.processors.job.GridJobProcessor$JobExecutionListener.onMessage(GridJobProcessor.java:1728)
> at
> org.apache.ignite.internal.managers.communication.GridIoManager.processRegularMessage0(GridIoManager.java:690)
> at
> org.apache.ignite.internal.managers.communication.GridIoManager.access$1500(GridIoManager.java:58)
> at
> org.apache.ignite.internal.managers.communication.GridIoManager$5.run(GridIoManager.java:653)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: java.lang.ClassCastException: org.h2.command.dml.Explain cannot be
> cast to org.h2.command.dml.Query
> at
> org.apache.ignite.internal.processors.query.h2.sql.GridSqlQueryParser.parse(GridSqlQueryParser.java:185)
> at
> org.apache.ignite.internal.processors.query.h2.sql.GridSqlQuerySplitter.split(GridSqlQuerySplitter.java:81)
> at
> org.apache.ignite.internal.processors.query.h2.IgniteH2Indexing.queryTwoStep(IgniteH2Indexing.java:850)
> at
> org.apache.ignite.internal.processors.query.GridQueryProcessor.queryTwoStep(GridQueryProcessor.java:561)
> at
> org.apache.ignite.internal.processors.cache.IgniteCacheProxy.query(IgniteCacheProxy.java:513)
> ... 16 more
> {code}
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