Robert Muir created LUCENE-5842:
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Summary: Validate checksum footers for postings lists, docvalues,
storedfields, termvectors on init
Key: LUCENE-5842
URL: https://issues.apache.org/jira/browse/LUCENE-5842
Project: Lucene - Core
Issue Type: Bug
Reporter: Robert Muir
For small files (e.g. where we read in all the bytes anyway), we currently
validate the checksum on reader init.
But for larger files like .doc/.frq/.pos/.dvd/.fdt/.tvd we currently do nothing
at all on init, as it would be too expensive.
We should at least do this:
{code}
// NOTE: data file is too costly to verify checksum against all the bytes on
// open, but for now we at least verify proper structure of the checksum
// footer: which looks for FOOTER_MAGIC + algorithmID. This is cheap
// and can detect some forms of corruption such as file truncation.
CodecUtil.retrieveChecksum(data);
{code}
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