Hi Team,

    I am observing some queries are running for longer time and getting
failed. Here is exception in kylin logs for "BadQueryDetector".

    Could someone please help me to understand about Bad Queries and
meaning of below stack trace :


    2018-10-23 09:36:40,647 DEBUG [BadQueryDetector]
badquery.BadQueryHistoryManager:65 : Loaded 22 Bad Query(s)
    2018-10-23 09:36:40,652 INFO  [BadQueryDetector]
service.BadQueryDetector:191 : Problematic thread 0x97 Query
33c76e71-450f-369b-ad81-c96ae763acf0-151, query id:
33c76e71-450f-369b-ad81-c96ae763acf0
      at
org.apache.kylin.dict.TrieDictionary.lookupValueFromSeqNo(TrieDictionary.java:305)
      at
org.apache.kylin.dict.TrieDictionary.getValueBytesFromIdImpl(TrieDictionary.java:262)
      at
org.apache.kylin.dict.TrieDictionary.getValueBytesFromIdWithoutCache(TrieDictionary.java:249)
      at
org.apache.kylin.dict.CacheDictionary.getValueFromIdImpl(CacheDictionary.java:81)
      at
org.apache.kylin.common.util.Dictionary.getValueFromId(Dictionary.java:141)
      at
org.apache.kylin.dict.lookup.SnapshotTable$1.getRow(SnapshotTable.java:170)
      at org.apache.kylin.dict.lookup.LookupTable.init(LookupTable.java:69)
      at
org.apache.kylin.dict.lookup.LookupStringTable.init(LookupStringTable.java:80)
      at
org.apache.kylin.dict.lookup.LookupTable.<init>(LookupTable.java:57)
      at
org.apache.kylin.dict.lookup.LookupStringTable.<init>(LookupStringTable.java:66)

Thank You,
Shrikant Bang

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