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https://issues.apache.org/jira/browse/FLINK-20841?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17258128#comment-17258128
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Piotr Nowojski commented on FLINK-20841:
----------------------------------------
Example failure:
{code:java}
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 11.057 s
[INFO] Finished at: 2021-01-04T08:56:41+01:00
[INFO] Final Memory: 137M/1207M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal
org.apache.maven.plugins:maven-compiler-plugin:3.8.0:testCompile
(default-testCompile) on project flink-parquet_2.11: Compilation failure:
Compilation failure:
[ERROR]
flink/flink-formats/flink-parquet/target/generated-test-sources/org/apache/flink/formats/parquet/generated/NestedRecord.java:[16,8]
duplicate class: org.apache.flink.formats.parquet.generated.NestedRecord
[ERROR]
flink/flink-formats/flink-parquet/target/generated-test-sources/org/apache/flink/formats/parquet/generated/SimpleRecord.java:[16,8]
duplicate class: org.apache.flink.formats.parquet.generated.SimpleRecord
[ERROR]
flink/flink-formats/flink-parquet/target/generated-test-sources/org/apache/flink/formats/parquet/generated/MapItem.java:[16,8]
duplicate class: org.apache.flink.formats.parquet.generated.MapItem
[ERROR]
flink/flink-formats/flink-parquet/src/test/java/org/apache/flink/formats/parquet/generated/Bar.java:[15,8]
duplicate class: org.apache.flink.formats.parquet.generated.Bar
[ERROR]
flink/flink-formats/flink-parquet/src/test/java/org/apache/flink/formats/parquet/generated/ArrayItem.java:[15,8]
duplicate class: org.apache.flink.formats.parquet.generated.ArrayItem
[ERROR]
/Users/pnowojski/flink/flink-formats/flink-parquet/target/generated-test-sources/org/apache/flink/formats/parquet/generated/Address.java:[16,8]
duplicate class: org.apache.flink.formats.parquet.generated.Address
{code}
> Fix compile error due to duplicated generated files
> ---------------------------------------------------
>
> Key: FLINK-20841
> URL: https://issues.apache.org/jira/browse/FLINK-20841
> Project: Flink
> Issue Type: Bug
> Reporter: Matthias
> Assignee: Matthias
> Priority: Major
> Labels: pull-request-available
>
> FLINK-20790 and FLINK-20805 caused a compile error due to duplicated
> generated Java files. The previous location for the file generation was not
> removed properly as the folder appeared in Flink's {{.gitignore}}.
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