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https://issues.apache.org/jira/browse/ARROW-4874?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rok Mihevc updated ARROW-4874:
------------------------------
External issue URL: https://github.com/apache/arrow/issues/21384
> [Python][C++] Cannot read parquet from encrypted hdfs
> -----------------------------------------------------
>
> Key: ARROW-4874
> URL: https://issues.apache.org/jira/browse/ARROW-4874
> Project: Apache Arrow
> Issue Type: Bug
> Components: Python
> Affects Versions: 0.12.0
> Environment: cloudera yarn cluster, red hat enterprise 7
> Reporter: Jesse Lord
> Priority: Major
>
> Using pyarrow 0.12 I was able to read parquet at first and then the admins
> added KMS servers and encrypted all of the files on the cluster. Now I get an
> error and the file system object can only read objects from the local file
> system of the edge node.
> Reproducible example:
> {code:java}
> import pyarrow as pa
> fs = pa.hdfs.connect()
> with fs.open('/user/jlord/test_lots_of_parquet/', 'rb') as fil:
> _ = fil.read(){code}
> error:
> {code:java}
> 19/03/14 10:29:48 WARN util.NativeCodeLoader: Unable to load native-hadoop
> library for your platform... using builtin-java classes where applicable
> hdfsOpenFile(/user/jlord/test_lots_of_parquet/):
> FileSystem#open((Lorg/apache/hadoop/fs/Path;I)Lorg/apache/hadoop/fs/FSDataInputStream
> error: FileNotFoundException: File /user/jlord/test_lots_of_parquet does not
> existjava.io.FileNotFoundException: File /user/jlord/test_lots_of_parquet
> does not exist at
> org.apache.hadoop.fs.RawLocalFileSystem.deprecatedGetFileStatus(RawLocalFileSystem.java:598)
> at
> org.apache.hadoop.fs.RawLocalFileSystem.getFileLinkStatusInternal(RawLocalFileSystem.java:811)
> at
> org.apache.hadoop.fs.RawLocalFileSystem.getFileStatus(RawLocalFileSystem.java:588)
> at
> org.apache.hadoop.fs.FilterFileSystem.getFileStatus(FilterFileSystem.java:432)
> at
> org.apache.hadoop.fs.ChecksumFileSystem$ChecksumFSInputChecker.<init>(ChecksumFileSystem.java:142)
> at org.apache.hadoop.fs.ChecksumFileSystem.open(ChecksumFileSystem.java:344)
> Traceback (most recent call last): File "local_hdfs.py", line 15, in <module>
> with fs.open(file, 'rb') as fil: File "pyarrow/io-hdfs.pxi", line 431, in
> pyarrow.lib.HadoopFileSystem.open File "pyarrow/error.pxi", line 83, in
> pyarrow.lib.check_status pyarrow.lib.ArrowIOError: HDFS file does not exist:
> /user/jlord/test_lots_of_parquet/{code}
> If I specify a specific parquet file in that folder I get the following error:
> {code:java}
> 19/03/14 10:07:32 WARN util.NativeCodeLoader: Unable to load native-hadoop
> library for your platform... using builtin-java classes where applicable
> hdfsOpenFile(/user/jlord/test_lots_of_parquet/part-00000-0f130b19-8c8c-428c-9854-fc76bdee1cfa.snappy.parquet):
>
> FileSystem#open((Lorg/apache/hadoop/fs/Path;I)Lorg/apache/hadoop/fs/FSDataInputStream
> error: FileNotFoundException: File
> /user/jlord/test_lots_of_parquet/part-00000-0f130b19-8c8c-428c-9854-fc76bdee1cfa.snappy.parquet
> does not existjava.io.FileNotFoundException: File
> /user/jlord/test_lots_of_parquet/part-00000-0f130b19-8c8c-428c-9854-fc76bdee1cfa.snappy.parquet
> does not exist at
> org.apache.hadoop.fs.RawLocalFileSystem.deprecatedGetFileStatus(RawLocalFileSystem.java:598)
> at
> org.apache.hadoop.fs.RawLocalFileSystem.getFileLinkStatusInternal(RawLocalFileSystem.java:811)
> at
> org.apache.hadoop.fs.RawLocalFileSystem.getFileStatus(RawLocalFileSystem.java:588)
> at
> org.apache.hadoop.fs.FilterFileSystem.getFileStatus(FilterFileSystem.java:432)
> at
> org.apache.hadoop.fs.ChecksumFileSystem$ChecksumFSInputChecker.<init>(ChecksumFileSystem.java:142)
> at org.apache.hadoop.fs.ChecksumFileSystem.open(ChecksumFileSystem.java:344)
> Traceback (most recent call last): File "local_hdfs.py", line 15, in <module>
> with fs.open(file, 'rb') as fil: File "pyarrow/io-hdfs.pxi", line 431, in
> pyarrow.lib.HadoopFileSystem.open File "pyarrow/error.pxi", line 83, in
> pyarrow.lib.check_status pyarrow.lib.ArrowIOError: HDFS file does not exist:
> /user/jlord/test_lots_of_parquet/part-00000-0f130b19-8c8c-428c-9854-fc76bdee1cfa.snappy.parquet{code}
>
> Not sure if this is relevant: spark can read continue to read the parquet
> files, but it takes a cloudera specific version that can read the following
> KMS keys from the core-site.xml and hdfs-site.xml:
> {code:java}
> <property>
> <name>dfs.encryption.key.provider.uri</name>
> <value>kms://[email protected];server2.com:16000/kms</value>
> </property>{code}
>
> Using the open source version of spark requires changing these xml values to:
> {code:java}
> <property>
> <name>dfs.encryption.key.provider.uri</name>
> <value>kms://[email protected]:16000/kms</value>
> <value>kms://[email protected]:16000/kms</value>
> </property>{code}
> Might need to point arrow to separate configuration xmls.
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