Can you please try with the latest version of Drill? Sent from my iPhone
> On Aug 26, 2025, at 11:20, Balwant kumar (Jira) <j...@apache.org> wrote: > > Balwant kumar created DRILL-8532: > ------------------------------------ > > Summary: SYSTEM ERROR: ExceptionInInitializerError: Exception > java.lang.UnsupportedOperationException: java.io.InvalidClassException: > org.antlr.v4.runtime.atn.ATN; Could not deserialize ATN with version 3 > (expected 4) > Key: DRILL-8532 > URL: https://issues.apache.org/jira/browse/DRILL-8532 > Project: Apache Drill > Issue Type: Bug > Affects Versions: 1.21.2 > Reporter: Balwant kumar > Attachments: sqlline log file.txt > > We are observing below error in few of our servers in *sqline.log* file when > our application is trying to execute jdbc query against > {*}apache-drill(version 1.21.2){*}. > > Inside *apache-drill\jars\3rdparty* folder we have antlr4-runtime-4.13.1.jar > & antlr-runtime-3.5.3.jar files. > > This issue is intermittent (mostly in case of large data). > > Caused by: java.lang.ExceptionInInitializerError: Exception > java.lang.UnsupportedOperationException: java.io.InvalidClassException: > org.antlr.v4.runtime.atn.ATN; Could not deserialize ATN with version 3 > (expected 4) > > > > Can you please take a look and see what's causing this issue? > > > > -- > This message was sent by Atlassian Jira > (v8.20.10#820010)
