Hi all,
I'm currently using version 1.2.2 of IoTDB, it seems like there might be
an issue with a data insertion in IoTDB.
Previously, I have loaded a public dataset into IoTDB that contains
duplicate records for time.
I have observed data loss occurring for duplicate timestamps, which is
expected. However, I have discovered something strange.
IoTDB> select * from root.Chicago.** where time = 1433123100000
+------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Time|
root.Chicago.taxi.value|
+------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|2015-06-01T10:45:00.000+09:00| {'vendor_name'
: Blue Diamond, 'location.type' : Point, 'location.latitude' :
41.880994471,'location.longitude' : -87.632746489}|
|2015-06-01T10:45:00.000+09:00| {'vendor_name' : Blue Ribbon Taxi
Association Inc., 'location.type' : Point, 'location.latitude' :
41.97907082,'location.longitude' : -87.903039661}|
+------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
Total line number = 2
It costs 0.085s
Looking at the results above, even though the timestamps are identical,
there are two tuples inserted. How can two tuples be stored at the same
time? Since both are referencing the same time series, shouldn't one value
overwrite the other?
Could you explain why such a situation occurred?
Cheongu Kim
