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https://issues.apache.org/jira/browse/KYLIN-3059?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16274017#comment-16274017
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liyang commented on KYLIN-3059:
-------------------------------
Thanks for the good report. From this and a few related reports, we have
identified that the metadata cache mechanism can corrupt in certain concurrency
scenarios. Will attempt a fix soon.
> Query got IllegalArgumentException
> ----------------------------------
>
> Key: KYLIN-3059
> URL: https://issues.apache.org/jira/browse/KYLIN-3059
> Project: Kylin
> Issue Type: Bug
> Components: Query Engine
> Affects Versions: v1.6.0
> Environment: apache-kylin-1.6.0-hbase1.x
> apache hadoop 2.7.2
> hbase-1.2.4
> Reporter: Xingxing Di
> Assignee: liyang
> Attachments: query.log
>
>
> A query got an exception , the error trace was :
> {code:java}
> Caused by: java.lang.IllegalArgumentException
> at
> com.google.common.base.Preconditions.checkArgument(Preconditions.java:76)
> at
> org.apache.kylin.metadata.model.TblColRef.<init>(TblColRef.java:105)
> at
> org.apache.kylin.metadata.model.TblColRef.columnForUnknownModel(TblColRef.java:74)
> at
> org.apache.kylin.query.relnode.OLAPTableScan.buildColumnRowType(OLAPTableScan.java:231)
> {code}
> the code is :
> {code:java}
> TblColRef(TableRef table, ColumnDesc column) {
> checkArgument(table.getTableDesc() == column.getTable()); // this
> line cause exception
> this.table = table;
> this.column = column;
> }
> {code}
> and after we did "Reload metadata", query executed successful.
> I dont know what will cause this exception, i think it may related to
> ProjectL2Cache or ProjectManager.
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