I created two issues.
The first one's summary reads:
Update myhost.example.org, 07.02.2020
The second one's summary reads:
Update myhost.1example.org, 07.02.2020
Unintentionally I queried via JQL as follows:
summary ~ "myhost.example.org,07.02.2020"
Notice the missing blank space between the comma and the date (07.02.2020).
To my surprise Issue Navigator showed my a result anyway!
I got curious and tried to query the second one by:
summary ~ "myhost.1example.org,07.02.2020"
Again, notice the missing blank space.
In this case I do not get any result. I tracked it down to the "1" in the domain (1example.org).
Although I fully understand that it is really crucial to have a correct specified JQL query here - why does one query do not consider the missing blank space but for the case there is a number in the domain it cares?
Blankspaces are not stored at all in the Lucene index, so they cannot be considered in any ways.
Too common words, like prepositions, are not stored in the index either.
Combinations of letters plus numbers is known to cause issues:
Just for curiosity, does this search work?
summary ~ "myhost.?example.org,07.02.2020
And this one?
summary ~ "myhost.*example.org,07.02.2020"
Hope it helps.
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