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  1. Solr
  2. SOLR-12765

Possibly incorrect format in JMX cache stats

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 7.4, 7.5, 8.0
    • Fix Version/s: 7.4.1, 7.5, 8.0
    • Component/s: metrics
    • Labels:
      None

      Description

      I posted a question on ML https://mail-archives.apache.org/mod_mbox/lucene-solr-user/201809.mbox/%3CCAGniRXR4Ps%3D03X0uiByCn5ecUT2VY4TLV4iNcxCde3dxBnmC-w%40mail.gmail.com%3E , but didn't get feedback. Since it looks like a possible bug, I am opening a ticket.

       
        It seems the format of cache mbeans changed with 7.4.0.  And from what I see similar change wasn't made for other mbeans, which may mean it was accidental and may be a bug.
       
        In Solr 7.3.* format was (each attribute on its own, numeric type):
       
      mbean:
      solr:dom1=core,dom2=gettingstarted,dom3=shard1,dom4=replica_n1,category=CACHE,scope=searcher,name=filterCache
       
      attributes:
            lookups java.lang.Long = 0
            hits java.lang.Long = 0
            cumulative_evictions java.lang.Long = 0
            size java.lang.Long = 0
            hitratio java.lang.Float = 0.0
            evictions java.lang.Long = 0
            cumulative_lookups java.lang.Long = 0
            cumulative_hitratio java.lang.Float = 0.0
            warmupTime java.lang.Long = 0
            inserts java.lang.Long = 0
            cumulative_inserts java.lang.Long = 0
            cumulative_hits java.lang.Long = 0

       
        With 7.4.0 there is a single attribute "Value" (java.lang.Object):
       
      mbean:
      solr:dom1=core,dom2=gettingstarted,dom3=shard1,dom4=replica_n1,category=CACHE,scope=searcher,name=filterCache
       
      attributes:
            Value java.lang.Object = {lookups=0, evictions=0, cumulative_inserts=0, cumulative_hits=0, hits=0, cumulative_evictions=0, size=0, hitratio=0.0, cumulative_lookups=0, cumulative_hitratio=0.0, warmupTime=0, inserts=0}
       

        Attachments

        1. SOLR-12765.patch
          2 kB
          Andrzej Bialecki

          Activity

            People

            • Assignee:
              ab Andrzej Bialecki
              Reporter:
              bosmid Bojan Smid
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              Dates

              • Created:
                Updated:
                Resolved: