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Command-line interface to check and exorcise corrupt segments from an index.

Run it like this:

java -ea:org.apache.lucene... org.apache.lucene.index.CheckIndex pathToIndex [-exorcise] [-verbose] [-segment X] [-segment Y]

• -exorcise: actually write a new segments_N file, removing any problematic segments. LOSES DATA

• -segment X: only check the specified segment(s). This can be specified multiple times, to check more than one segment: -segment _2 * -segment _a. You can't use this with the -exorcise option.

WARNING: -exorcise should only be used on an emergency basis as it will cause documents (perhaps many) to be permanently removed from the index. Always make a backup copy of your index before running this! Do not run this tool on an index that is actively being written to. You have been warned!

Run without -exorcise, this tool will open the index, report version information and report any exceptions it hits and what action it would take if -exorcise were specified. With -exorcise, this tool will remove any segments that have issues and write a new segments_N file. This means all documents contained in the affected segments will be removed.

This tool exits with exit code 1 if the index cannot be opened or has any corruption, else