How to read DebugQuery output

[Paresh Khandelwal <kh...@gmail.com>]

Hi All,

I tried to get the debug information about the query for my INNER JOIN and
ACROSS JOIN and trying to understand it.

See the query below - 1487 msec
        {
          "responseHeader":{
            "status":0,             "QTime":1487,
            "params":{              "q":"*:*",
              "fq.op":"AND",               "indent":"on",
              "fl":"TC_0Y0_Item_ID",
              "fq":["TC_0Y0_Occurrence_Name:\"6935 style rear MY11+\"",
                "TC_0Y0_ProductScope:xtWNf_fTAaLUgD",
                "{!join to=TC_0Y0_Item_ID
from=TC_0Y0_ItemRevision_0Y0_awp0Item_item_id
fromIndex=collection1}TC_0Y0_ItemRevision_0Y0_awp0Item_item_id:92138773"],
              "wt":"json",               "debugQuery":"on",
              "group.field":"TC_0Y0_Item_ID", ......
          "debug":{
            "join":{
              "{!join from=TC_0Y0_ItemRevision_0Y0_awp0Item_item_id
to=TC_0Y0_Item_ID
fromIndex=collection1}TC_0Y0_ItemRevision_0Y0_awp0Item_item_id:92138773":{
                "time":955,
                "fromSetSize":3,
                "toSetSize":14560,
                "fromTermCount":6632106,
                "fromTermTotalDf":6632106,
                "fromTermDirectCount":6632106,
                "fromTermHits":1,
                "fromTermHitsTotalDf":1,
                "toTermHits":1,
                "toTermHitsTotalDf":14560,
                "toTermDirectCount":0,
                "smallSetsDeferred":1,
                "toSetDocsAdded":14560}},
            "rawquerystring":"*:*",
            "querystring":"*:*",
            "parsedquery":"MatchAllDocsQuery(*:*)",
            "parsedquery_toString":"*:*",
            "explain":{
              "AZD1uV0qgj6GxC":"\n1.0 = *:*, product of:\n  1.0 = boost\n
 1.0 = queryNorm\n"},
            "QParser":"LuceneQParser",
            "filter_queries":["TC_0Y0_Occurrence_Name:\"6935 style rear
MY11+\"",
              "TC_0Y0_ProductScope:xtWNf_fTAaLUgD",
              "{!join to=TC_0Y0_Item_ID
from=TC_0Y0_ItemRevision_0Y0_awp0Item_item_id
fromIndex=collection1}TC_0Y0_ItemRevision_0Y0_awp0Item_item_id:92138773"],
            "parsed_filter_queries":["TC_0Y0_Occurrence_Name:6935 style
rear MY11+",
              "TC_0Y0_ProductScope:xtWNf_fTAaLUgD",
              "JoinQuery({!join
from=TC_0Y0_ItemRevision_0Y0_awp0Item_item_id to=TC_0Y0_Item_ID
fromIndex=collection1}TC_0Y0_ItemRevision_0Y0_awp0Item_item_id:92138773)"],
            "timing":{
              "time":1487.0,  ......

I am trying to see why fromTermCount is so high when fromSetSize and
toSetSize is less?

Where can I find the details about all the contents of debugQuery and how
to read each component?

Any help is appreciated.

Regards,
Paresh