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https://issues.apache.org/jira/browse/IMPALA-11273?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17710353#comment-17710353
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Michael Smith commented on IMPALA-11273:
----------------------------------------
Most of these are straight-forward. Object.finalize is the only questionable
one.
I don't think it's needed. It was added in the original commit
([4800995d|https://github.com/apache/impala/commit/4800995d440f0966cf57c448c367e45ee54ece32])
with no context why it might be needed. UdfExecutor looks to be exclusively
created through calls from C++. The expression evaluator looks to always call
close. Trying out some tests to see if it catches any unclosed executors.
> Get rid of deprecated API in Java 11
> ------------------------------------
>
> Key: IMPALA-11273
> URL: https://issues.apache.org/jira/browse/IMPALA-11273
> Project: IMPALA
> Issue Type: Task
> Reporter: Quanlong Huang
> Assignee: Quanlong Huang
> Priority: Major
>
> Frontend uses some Java APIs that are deprecated in Java 11:
> {code:java}
> $ cd $IMPALA_HOME
> $ source bin/impala-config.sh
> $ source bin/set-classpath.sh
> $ ~/software/jdk-11.0.2/bin/jdeprscan --release 11 --class-path "$CLASSPATH"
> fe/target/impala-frontend-4.1.0-SNAPSHOT.jar
> Jar file fe/target/impala-frontend-4.1.0-SNAPSHOT.jar:
> class org/apache/impala/service/Frontend$CheckAuthorization uses deprecated
> method java/lang/Boolean::<init>(Z)V
> class org/apache/impala/planner/AnalyticPlanner uses deprecated method
> java/lang/Boolean::<init>(Z)V
> class org/apache/impala/planner/SingleNodePlanner uses deprecated method
> java/lang/Long::<init>(J)V
> class org/apache/impala/planner/SingleNodePlanner uses deprecated method
> java/lang/Boolean::<init>(Z)V
> class org/apache/impala/analysis/NumericLiteral uses deprecated method
> java/math/BigDecimal::setScale(II)Ljava/math/BigDecimal;
> class org/apache/impala/analysis/SelectStmt uses deprecated method
> java/lang/Boolean::<init>(Z)V
> class org/apache/impala/analysis/OrderByElement uses deprecated method
> java/lang/Boolean::<init>(Z)V
> class org/apache/impala/analysis/SqlScanner uses deprecated method
> java/lang/Integer::<init>(I)V
> class org/apache/impala/catalog/ColumnStats uses deprecated method
> java/lang/Long::<init>(J)V
> class org/apache/impala/catalog/ColumnStats uses deprecated method
> java/lang/Double::<init>(D)V
> class org/apache/impala/hive/executor/ImpalaStringWritable uses deprecated
> method java/lang/Object::finalize()V
> class org/apache/impala/hive/executor/ImpalaStringWritable overrides
> deprecated method java/lang/Object::finalize()V
> class org/apache/impala/hive/executor/UdfExecutor uses deprecated method
> java/lang/Object::finalize()V
> class org/apache/impala/hive/executor/UdfExecutor overrides deprecated method
> java/lang/Object::finalize()V{code}
> We should update codes to get rid of them.
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