Details
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Bug
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Status: Open
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Major
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Resolution: Unresolved
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1.12.0, 1.13.0
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None
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None
Description
I have been running into a bug due to parquet-format and parquet-format-structures both defining the org.apache.parquet.format.Util class but doing so inconsistently.
Examples of this are several methods which include a BlockCipher parameter that are defined from parquet-format-structures but not parquet-format. While invoking code that happens to use these, such as org.apache.parquet.hadoop.ParquetFileReader.readFooter, the code will fail if the parquet-format happens to be loaded first on the classpath.
Here is an example stack trace for a Scala Spark application.
Caused by: java.lang.NoSuchMethodError: 'org.apache.parquet.format.FileMetaData org.apache.parquet.format.Util.readFileMetaData(java.io.InputStream, org.apache.parquet.format.BlockCipher$Decryptor, byte[])'
at org.apache.parquet.format.converter.ParquetMetadataConverter$3.visit(ParquetMetadataConverter.java:1441) ~[parquet_hadoop.jar:1.13.1]
at org.apache.parquet.format.converter.ParquetMetadataConverter$3.visit(ParquetMetadataConverter.java:1438) ~[parquet_hadoop.jar:1.13.1]
at org.apache.parquet.format.converter.ParquetMetadataConverter$NoFilter.accept(ParquetMetadataConverter.java:1173) ~[parquet_hadoop.jar:1.13.1]
at org.apache.parquet.format.converter.ParquetMetadataConverter.readParquetMetadata(ParquetMetadataConverter.java:1438) ~[parquet_hadoop.jar:1.13.1]
at org.apache.parquet.hadoop.ParquetFileReader.readFooter(ParquetFileReader.java:591) ~[parquet_hadoop.jar:1.13.1]
at org.apache.parquet.hadoop.ParquetFileReader.readFooter(ParquetFileReader.java:536) ~[parquet_hadoop.jar:1.13.1]
at org.apache.parquet.hadoop.ParquetFileReader.readFooter(ParquetFileReader.java:530) ~[parquet_hadoop.jar:1.13.1]
at org.apache.parquet.hadoop.ParquetFileReader.readFooter(ParquetFileReader.java:478) ~[parquet_hadoop.jar:1.13.1]
... (my application code invoking the above)
Because of issues external to Parquet that I have yet to figure out (a complex Spark and dependency setup), my classpaths are not deterministically ordered and I am unable to pin the parquet-format-structures ahead hence why I'm chiming in about this.
Even if that weren't the case, this is a fairly prickly edge to run into as both modules define overlapping classes. Util is not the only class that appears to be defined by both, just what I have been focusing on due to this bug.
It appears these methods were introduced in at least 1.12: https://github.com/apache/parquet-mr/commit/65b95fb72be8f5a8a193a6f7bc4560fdcd742fc7#diff-852341c99dcae06c8fa2b764bcf3d9e6860e40442d0ab1cf5b935df80a9cacb7