[python] Add HDFS native FileIO backend (no Hadoop install required)#8031
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[python] Add HDFS native FileIO backend (no Hadoop install required)#8031TheR1sing3un wants to merge 2 commits into
TheR1sing3un wants to merge 2 commits into
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Introduces HdfsNativeFileIO backed by the hdfs-native protocol client (Rust + PyO3). Removes the runtime need for HADOOP_HOME / JDK / libhdfs on the client side. viewfs mount tables and HA NameNode lists can come from local xml (HADOOP_CONF_DIR / hdfs.conf-dir option) or directly from catalog options delivered by a REST catalog (keys with prefixes dfs./fs./hadoop./ipc./io. are forwarded as-is). Default backend for hdfs:// and viewfs:// switches to native; the PyArrow / libhdfs path is kept, with auto-fallback when hdfs-native is unavailable (e.g. on Windows or when the extra is not installed). Adds: HdfsNativeFileIO, HdfsOptions, _kerberos helpers, unit tests, Docker-based e2e scaffold, native vs pyarrow benchmark, README section.
RAT check failed on docker-compose.yml and the e2e README. Add the standard Apache 2.0 header to both.
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Introduces HdfsNativeFileIO backed by the hdfs-native protocol client (Rust + PyO3)
Default backend for hdfs:// and viewfs:// switches to native; the PyArrow / libhdfs path is kept, with auto-fallback when hdfs-native is unavailable (e.g. on Windows or when the extra is not installed).
Adds: HdfsNativeFileIO, HdfsOptions, _kerberos helpers, unit tests, Docker-based e2e scaffold, native vs pyarrow benchmark, README section.