rmuir commented on pull request #1557:
URL: https://github.com/apache/lucene-solr/pull/1557#issuecomment-643285331
i'm proposing something like this for the new method:
```
if (expectedLength < footerLength()) {
throw new IllegalArgumentException("expectedLength cannot be less than the
footer length");
}
if (in.length() < expectedLength) {
throw new CorruptIndexException("truncated file: length=" + in.length() +
" but expectedLength==" + expectedLength, in);
} else if (in.length() > expectedLength) {
throw new CorruptIndexException("file too long: length=" + in.length() + "
but expectedLength==" + expectedLength, in);
}
return retrieveChecksum(in);
```
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