Array Index OutOf Bounds Exception when fall Back Dictionary Encoded Data
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Description
java.lang.ArrayIndexOutOfBoundsException: 39782
\n\tat org.apache.parquet.column.values.dictionary.DictionaryValuesWriter$PlainBinaryDictionaryValuesWriter.fallBackDictionaryEncodedData(DictionaryValuesWriter.java:284)
\n\tat org.apache.parquet.column.values.dictionary.DictionaryValuesWriter.fallBackAllValuesTo(DictionaryValuesWriter.java:123)
\n\tat org.apache.parquet.column.values.fallback.FallbackValuesWriter.fallBack(FallbackValuesWriter.java:147)
\n\tat org.apache.parquet.column.values.fallback.FallbackValuesWriter.checkFallback(FallbackValuesWriter.java:141)
\n\tat org.apache.parquet.column.values.fallback.FallbackValuesWriter.writeBytes(FallbackValuesWriter.java:163)
\n\tat org.apache.parquet.column.impl.ColumnWriterV1.write(ColumnWriterV1.java:201)
\n\tat org.apache.parquet.io.MessageColumnIO$MessageColumnIORecordConsumer.addBinary(MessageColumnIO.java:467)
\n\tat org.apache.parquet.io.RecordConsumerLoggingWrapper.addBinary(RecordConsumerLoggingWrapper.java:119)
\n\tat org.apache.parquet.example.data.simple.BinaryValue.writeValue(BinaryValue.java:45)
\n\tat org.apache.parquet.example.data.simple.SimpleGroup.writeValue(SimpleGroup.java:229)
\n\tat org.apache.parquet.example.data.GroupWriter.writeGroup(GroupWriter.java:51)
\n\tat org.apache.parquet.example.data.GroupWriter.write(GroupWriter.java:37)
\n\tat org.apache.parquet.hadoop.example.GroupWriteSupport.write(GroupWriteSupport.java:79)
\n\tat org.apache.parquet.hadoop.example.GroupWriteSupport.write(GroupWriteSupport.java:36)
\n\tat org.apache.parquet.hadoop.InternalParquetRecordWriter.write(InternalParquetRecordWriter.java:123)
\n\tat org.apache.parquet.hadoop.ParquetWriter.write(ParquetWriter.java:293)
**Reporter**: [jiangbo](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=jiangbo)
**Note**: *This issue was originally created as [PARQUET-1852](https://issues.apache.org/jira/browse/PARQUET-1852). Please see the [migration documentation](https://issues.apache.org/jira/browse/PARQUET-2502) for further details.*
Contributor guide
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Research direction
Start with DictionaryValuesWriter.java at fallBackDictionaryEncodedData, line 284, and trace the fallback calls through DictionaryValuesWriter.java, FallbackValuesWriter.java, and ColumnWriterV1.java. Determine the input that produces the reported ArrayIndexOutOfBoundsException and verify that the fallback path handles it without the exception, with regression coverage if an existing test entry point is identified.
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Assessment
- Tech stack
- java
- Domain
- data-engineering
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 30/100