[HUDI-7347] Introduce SeekableDataInputStream for random access #10575
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hudi-hadoop-common/src/main/java/org/apache/hudi/hadoop/fs/HadoopSeekableDataInputStream.java
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Change Logs
This PR introduces
SeekableDataInputStreamfor random access on a file, i.e., seeking to a position in a file and reading the content. The random access on a file is used by the log scanner and reader. Before this PR, the log reader relies onFSDataInputStreamwhich is coupled with Hadoop file system. To allow Hadoop-independent file systems to be used to read log files, the interfaceSeekableDataInputStreamis introduced to provide random access APIs without relying onFSDataInputStream.HadoopSeekableDataInputStreamimplementsSeekableDataInputStreamwithFSDataInputStreaminstance and is used to realize the same logic as before (no behavior change).This is part of the effort to provide Hudi storage abstraction and decouple
hudi-commonfrom hadoop dependencies. For reference, the single big-change PR can be found here: #10360.Impact
Makes random access on files and log reading independent of Hadoop APIs. No behavior change.
Risk level
none
Documentation Update
N/A
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