Addshore closed this task as "Resolved".
Addshore claimed this task.
Addshore added a comment.

So https://grafana-admin.wikimedia.org/dashboard/db/wikidata-query-service now 
shows the Error rate which is derived from the Error counter from blazegraph.

This counts "The #of instances of the query which terminated abnormally." 
<https://github.com/wikimedia/wikidata-query-blazegraph/blob/627e765b809694975bf58fd25fb4b8256f7f831a/bigdata/src/java/com/bigdata/bop/engine/QueryEngineCounters.java#L55>

This includes timeouts caused by deadlines being set 
<https://github.com/wikimedia/wikidata-query-blazegraph/blob/627e765b809694975bf58fd25fb4b8256f7f831a/bigdata/src/java/com/bigdata/bop/engine/AbstractRunningQuery.java#L375>
 (it includes everything calling halt( Throwable cause )

This doesn't give us a breakdown of the reasons for errors, but looking at the 
number of errors I wouldn't worry about this much.

Thus closing!


TASK DETAIL
  https://phabricator.wikimedia.org/T117611

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To: Addshore
Cc: Deskana, Addshore, mpopov, Ironholds, Aklapper, StudiesWorld, Smalyshev, 
jkroll, Wikidata-bugs, Jdouglas, aude, Manybubbles, Mbch331



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