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https://issues.apache.org/jira/browse/DRILL-8525?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Maksym Rymar resolved DRILL-8525.
---------------------------------
Resolution: Fixed
> Migrate fully to Apache Commons Collections 4.x
> -----------------------------------------------
>
> Key: DRILL-8525
> URL: https://issues.apache.org/jira/browse/DRILL-8525
> Project: Apache Drill
> Issue Type: Task
> Reporter: Maksym Rymar
> Assignee: Maksym Rymar
> Priority: Major
> Fix For: 1.22.0
>
>
> Despite Drill having {{{{commons-collection4}} dependency, a bunch of classes
> keep using commons-collection}} (the third major release):
> {code:java}
> exec/java-exec/src/main/java/org/apache/drill/exec/coord/zk/ZKClusterCoordinator.java
> exec/java-exec/src/main/java/org/apache/drill/exec/physical/base/AbstractGroupScanWithMetadata.java
> exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/aggregate/HashAggBatch.java
> exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/project/ProjectionMaterializer.java
> exec/java-exec/src/main/java/org/apache/drill/exec/planner/physical/LateralJoinPrel.java
> exec/java-exec/src/main/java/org/apache/drill/exec/server/options/SystemOptionManager.java
> exec/java-exec/src/main/java/org/apache/drill/exec/store/dfs/easy/EasyGroupScan.java
> exec/java-exec/src/main/java/org/apache/drill/exec/store/ischema/RecordCollector.java
> exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/AbstractParquetGroupScan.java
> exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet2/DrillParquetReader.java
> exec/java-exec/src/main/java/org/apache/drill/exec/work/filter/RuntimeFilterRouter.java{code}
> The {{commons-collection}} is not declared in Drill project and comes as a
> transitive dependency from {{{}hadoop-commons{}}}:
> {code:java}
> [INFO] --- dependency:3.6.1:tree (default-cli) @ drill-java-exec ---
> [INFO] org.apache.drill.exec:drill-java-exec:jar:1.22.0-SNAPSHOT
> [INFO] +- org.apache.hadoop:hadoop-common:jar:3.3.6:compile
> [INFO] | \- commons-collections:commons-collections:jar:3.2.2:compile
> [INFO] \- org.apache.commons:commons-collections4:jar:4.4:compile{code}
> But Hadoop drops it starting from 3.4.2 release:
> https://issues.apache.org/jira/browse/HADOOP-15760
>
>
>
>
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