**How to reproduce**
Clickhouse server 20.13.1.5273
```
CREATE TABLE default.test
(
`key` UInt32,
`ts` DateTime CODEC(DoubleDelta, LZ4),
`db_time` DateTime DEFAULT now() COMMENT 'spout-ignore' CODEC(DoubleDelta, LZ4)
)
ENGINE = MergeTree
PARTITION BY toStartOfTenMinutes(db_time)
ORDER BY (key, ts)
TTL db_time + toIntervalHour(3)
SETTINGS index_granularity = 8192, merge_with_ttl_timeout = 3600, min_rows_for_compact_part = 1000000, min_bytes_for_compact_part = 200000000, in_memory_parts_enable_wal = 0;


INSERT INTO test(key, ts) SELECT number % 1000, now() + intDiv(number,1000) FROM numbers(500);

SELECT * FROM test;
500 rows in set. Elapsed: 0.003 sec.

DETACH TABLE test;

ATTACH TABLE test;

SELECT * FROM test;

0 rows in set. Elapsed: 0.002 sec.
```

**Expected behavior**
Clickhouse would flush parts on disk.
*/
    virtual Pipe read(
        const Names & ,
        const StorageMetadataPtr & ,
        SelectQueryInfo & ,
        ContextPtr ,
        QueryProcessingStage::Enum ,
        size_t ,
        unsigned );
    
    
    virtual void read(
        QueryPlan & query_plan,
        const Names & ,
        const StorageMetadataPtr & ,
        SelectQueryInfo & ,
        ContextPtr ,
        QueryProcessingStage::Enum ,
        size_t ,
        unsigned );
    /** Writes the data to a table.
      * Receives a description of the query, which can contain information about the data write method.
      * Returns an object by which you can write data sequentially.
      *
      * metadata_snapshot is consistent snapshot of table metadata, it should be
      * passed in all parts of the returned streams. Storage metadata can be
      * changed during lifetime of the returned streams, but the snapshot is
      * guaranteed to be immutable.
      */
    virtual SinkToStoragePtr write(