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https://issues.apache.org/jira/browse/DRILL-4831?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15678465#comment-15678465
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ASF GitHub Bot commented on DRILL-4831:
---------------------------------------
Github user ppadma commented on the issue:
https://github.com/apache/drill/pull/653
Updated diffs with all review comments taken care of.
> Running refresh table metadata concurrently randomly fails with
> JsonParseException
> ----------------------------------------------------------------------------------
>
> Key: DRILL-4831
> URL: https://issues.apache.org/jira/browse/DRILL-4831
> Project: Apache Drill
> Issue Type: Bug
> Components: Metadata
> Affects Versions: 1.8.0
> Reporter: Rahul Challapalli
> Assignee: Padma Penumarthy
> Attachments: error.log, l_3level.tgz
>
>
> git.commit.id.abbrev=f476eb5
> Just run the below command concurrently from 10 different JDBC connections.
> There is a likelihood that you might encounter the below error
> Extracts from the log
> {code}
> Caused By (java.lang.AssertionError) Internal error: Error while applying
> rule DrillPushProjIntoScan, args
> [rel#189411:LogicalProject.NONE.ANY([]).[](input=rel#189289:Subset#3.ENUMERABLE.ANY([]).[],l_orderkey=$1,dir0=$2,dir1=$3,dir2=$4,l_shipdate=$5,l_extendedprice=$6,l_discount=$7),
> rel#189233:EnumerableTableScan.ENUMERABLE.ANY([]).[](table=[dfs,
> metadata_caching_pp, l_3level])]
> org.apache.calcite.util.Util.newInternal():792
> org.apache.calcite.plan.volcano.VolcanoRuleCall.onMatch():251
> .....
> .....
> java.lang.Thread.run():745
> Caused By (org.apache.drill.common.exceptions.DrillRuntimeException)
> com.fasterxml.jackson.core.JsonParseException: Illegal character ((CTRL-CHAR,
> code 0)): only regular white space (\r, \n, \t) is allowed between tokens
> at [Source: com.mapr.fs.MapRFsDataInputStream@57a574a8; line: 1, column: 2]
> org.apache.drill.exec.planner.logical.DrillPushProjIntoScan.onMatch():95
> {code}
> Attached the complete log message and the data set
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