class StateStoreChangelogReaderFactory extends Logging
A factory class for constructing state store readers by reading the first line of the change log file, which stores the version. Note that for changelog version 1, there is no version written.
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- new StateStoreChangelogReaderFactory(fm: CheckpointFileManager, fileToRead: Path, compressionCodec: CompressionCodec)
- fm
- checkpoint file manager used to manage streaming query checkpoint
- fileToRead
- name of file to use to read changelog
- compressionCodec
- de-compression method using for reading changelog file
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- def constructChangelogReader(): StateStoreChangelogReader
Construct the change log reader based on the version stored in changelog file
Construct the change log reader based on the version stored in changelog file
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StateStoreChangelogReader
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- Deprecated
(Since version 9)