HBase RandomRawFiilter仅返回某些具有相同结构的表的结果

Question

我每个月创建的表结构相同，其中包含tweet id作为行键。我需要从每个表中检索600条随机推文。有趣的是，它仅返回某些表的结果。如果我在hbase shell中进行表扫描，则可以看到结果。我想知道这种行为的原因可能是什么。

        HTable indexTable = (HTable) connection.getTable(TableName.valueOf(indexTableName));
        Scan scan = new Scan();
        RandomRowFilter filter1 = new RandomRowFilter(1);
        PageFilter filter2 = new PageFilter(getNtweetsPerMonth());
        FilterList orFilter = new FilterList();
        orFilter.addFilter(filter1);
        orFilter.addFilter(filter2);

        scan.setFilter(orFilter);
        scan.setMaxResultSize(getNtweetsPerMonth());

        if (tsStart >= 0 && tsEnd >= 0) {
            if (tsEnd < Long.MAX_VALUE) {
                scan.setTimeRange(tsStart, tsEnd + 1);
            } else {
                scan.setTimeRange(tsStart, tsEnd);
            }
        }
        ResultScanner rs = indexTable.getScanner(scan);
        Result r = rs.next();
        while (r != null) {
            String tweetIdString = TruthyHelpers.getTweetIDStrFromBigIntBytes(r.getRow());
            BytesWritable tweetIdBytes = new BytesWritable(Bytes.toBytes(tweetIdString));
            contentResults.add(tweetIdBytes);
            r = rs.next();
        }
        rs.close();
        indexTable.close();
        connection.close();
        return contentResults;