private void saveEntryInt(int curEntry, boolean isFlush) throws IOException {
        entryCount++;
        if (entryBuffer.remaining() >= 4) {
            entryBuffer.putInt(curEntry);
        } else {
            entryBuffer.flip();
            entryFile.write(entryBuffer);
            entryBuffer.clear();

            entryBuffer.putInt(curEntry);
        }
        if (isFlush) {
            entryBuffer.flip();
            entryFile.write(entryBuffer);
            entryBuffer.clear();
        }
    }
Delete all files generated by this class.
indexr-vlt-segment/src/main/java/io/indexr/vlt/segment/index/DictMerge.java