[DRILL-4831] Running refresh table metadata concurrently randomly fails with JsonParseException

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.8.0
• Component/s: Metadata
• Assignee: Unassigned
• Reporter: Rahul Kumar Challapalli
• Reviewer: Aman Sinha
• Created: 05/Aug/16 22:29
• Updated: 23/Oct/19 12:46

Description

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

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

Attached the complete log message and the data set

Issue Links

• links to: GitHub Pull Request #653