IllegalDataException while querying, seems something's wrong whith the qualifier

[strgrb]

net.opentsdb.core.IllegalDataException: Integer value @ 0 not on 8/4/2/1 bytes in [83, -11, 0, 0, 2, 67, -116, 0]
at net.opentsdb.core.RowSeq.extractIntegerValue(RowSeq.java:242) ~[opentsdb-2.0.jar:na]
at net.opentsdb.core.RowSeq$Iterator.longValue(RowSeq.java:607) ~[opentsdb-2.0.jar:na]
at net.opentsdb.core.Span$DownsamplingIterator.nextLongValue(Span.java:624) ~[opentsdb-2.0.jar:na]
at net.opentsdb.core.Aggregators$Sum.runLong(Aggregators.java:119) ~[opentsdb-2.0.jar:na]

I debugged the code, and found that the flags value is 2, which should be 0/1/3/7.

[manolama]

Ooo that's really odd. What version of OpenTSDB are you using? Also was there an upgrade between when the data in question was written and when it was queried? I want to make sure a bug didn't sneak in there.