private static void invalidateIndex() {
LOG.info("Marking VFS as corrupted");
final File indexRoot = PathManager.getIndexRoot();
if (indexRoot.exists()) {
final String[] children = indexRoot.list();
if (children != null && children.length > 0) {
// create index corruption marker only if index directory exists and is non-empty
// It is incorrect to consider non-existing indices "corrupted"
FileUtil.createIfDoesntExist(new File(PathManager.getIndexRoot(), "corruption.marker"));
}
}
}
