[ https://issues.apache.org/jira/browse/IOTDB-5747?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
yang caiyin reassigned IOTDB-5747: ---------------------------------- Assignee: yang caiyin > UDF SlidingTimeWindow slidingStep bug > ------------------------------------- > > Key: IOTDB-5747 > URL: https://issues.apache.org/jira/browse/IOTDB-5747 > Project: Apache IoTDB > Issue Type: Bug > Reporter: Lei Rui > Assignee: yang caiyin > Priority: Major > > To reproduce the bug in IoTDB v1.0.1: > ``` > insert into root.sg1.d1(timestamp,s1) values(1,1) > insert into root.sg1.d1(timestamp,s1) values(2,2) > insert into root.sg1.d1(timestamp,s1) values(3,3) > insert into root.sg1.d1(timestamp,s1) values(4,4) > insert into root.sg1.d1(timestamp,s1) values(5,5) > insert into root.sg1.d1(timestamp,s1) values(6,6) > insert into root.sg1.d1(timestamp,s1) values(7,7) > insert into root.sg1.d1(timestamp,s1) values(8,8) > select M4(s1,'timeInterval'='3','slidingStep'='2') from root.sg1.d1 > ``` > The query result is: > ``` > +-----------------------------+---------------------------------------------------------+ > | Time|M4(root.sg1.d1.s1, "timeInterval"="3", > "slidingStep"="2")| > +-----------------------------+---------------------------------------------------------+ > |1970-01-01T08:00:00.001+08:00| > 1.0| > |1970-01-01T08:00:00.003+08:00| > 3.0| > +-----------------------------+---------------------------------------------------------+ > Total line number = 2 > ``` > which is wrong, as the sliding time windows and the M4 samples of each window > should be: > - [1,4): samples (1,1),(3,3) > - [3,6): samples (3,3),(5,5) > - [5,8): samples (5,5), (7,7) > - [7,10): samples (7,7), (8,8) > From my observation, the bug tends to happen when the slidingStep equals > timeInterval-1. I think there are bugs in the sliding time window code, but I > couldn't locate the bug because I am not familiar with the UDF module. > By the way, IoTDB version is: > ``` > IoTDB> show version > +-------+-----------+ > |Version| BuildInfo| > +-------+-----------+ > | 1.0.1|88c9bef-dev| > +-------+-----------+ > ``` > I used the released apache-iotdb-1.0.1-all-bin zip. -- This message was sent by Atlassian Jira (v8.20.10#820010)