== Abstract Syntax Tree ==
LogicalSink(table=[default_catalog.default_database.sink], fields=[bidder, bid_count, starttime, endtime])
+- LogicalProject(bidder=[$0], bid_count=[$2], starttime=[SESSION_START($1)], endtime=[SESSION_END($1)])
   +- LogicalAggregate(group=[{0, 1}], bid_count=[COUNT()])
      +- LogicalProject(bidder=[$1], $f1=[$SESSION($5, 10000:INTERVAL SECOND)])
         +- LogicalProject(auction=[$3.auction], bidder=[$3.bidder], price=[$3.price], channel=[$3.channel], url=[$3.url], dateTime=[$5], extra=[$3.extra])
            +- LogicalFilter(condition=[=($0, 2)])
               +- LogicalWatermarkAssigner(rowtime=[rowtime], watermark=[-($5, 4000:INTERVAL SECOND)])
                  +- LogicalProject(event_type=[$0], person=[$1], auction=[$2], bid=[$3], dateTime=[$4], rowtime=[TO_TIMESTAMP_LTZ($4, 3)])
                     +- LogicalTableScan(table=[[default_catalog, default_database, src]])

== Optimized Physical Plan ==
NativePaimonSink(reuseBarrier=[1535])
+- NativeCalc(reuseBarrier=[1534])
   +- NativeColumnarSessionWindowAggregate(reuseBarrier=[1533])
      +- NativeColumnarExchange(reuseBarrier=[1532])
         +- NativeCalc(reuseBarrier=[1531])
            +- NativeKafkaDecode(topic=[nexmark], format=[json], watermarkColumn=[dateTime], watermarkExpression=[-(TO_TIMESTAMP_LTZ($4, 3), 4000:INTERVAL SECOND)], reuseBarrier=[1530])

== Optimized Execution Plan ==
NativePaimonSink
+- NativeCalc
   +- NativeColumnarSessionWindowAggregate
      +- NativeColumnarExchange
         +- NativeCalc
            +- NativeKafkaDecode(topic=[nexmark], format=[json], watermarkColumn=[dateTime], watermarkExpression=[-(TO_TIMESTAMP_LTZ($4, 3), 4000:INTERVAL SECOND)])

== Physical Execution Plan ==
{
  "nodes" : [ {
    "id" : 2929,
    "type" : "Source: native-kafka-source",
    "pact" : "Data Source",
    "contents" : "Source: native-kafka-source",
    "parallelism" : 4
  }, {
    "id" : 2930,
    "type" : "NativeCalcExecNode[1418]",
    "pact" : "Operator",
    "contents" : "[1418]:NativeCalc",
    "parallelism" : 4,
    "predecessors" : [ {
      "id" : 2929,
      "ship_strategy" : "FORWARD",
      "side" : "second"
    } ]
  }, {
    "id" : 2931,
    "type" : "NativeColumnarExchangeExecNode[1419]",
    "pact" : "Operator",
    "contents" : "[1419]:NativeColumnarExchange",
    "parallelism" : 4,
    "predecessors" : [ {
      "id" : 2930,
      "ship_strategy" : "FORWARD",
      "side" : "second"
    } ]
  }, {
    "id" : 2933,
    "type" : "NativeColumnarSessionWindowAggExecNode[1420]",
    "pact" : "Operator",
    "contents" : "[1420]:NativeColumnarSessionWindowAggregate",
    "parallelism" : 4,
    "predecessors" : [ {
      "id" : 2931,
      "ship_strategy" : "columnar-key-group",
      "side" : "second"
    } ]
  }, {
    "id" : 2934,
    "type" : "NativeCalcExecNode[1421]",
    "pact" : "Operator",
    "contents" : "[1421]:NativeCalc",
    "parallelism" : 4,
    "predecessors" : [ {
      "id" : 2933,
      "ship_strategy" : "FORWARD",
      "side" : "second"
    } ]
  }, {
    "id" : 2935,
    "type" : "native-paimon-bucket-route",
    "pact" : "Operator",
    "contents" : "native-paimon-bucket-route",
    "parallelism" : 4,
    "predecessors" : [ {
      "id" : 2934,
      "ship_strategy" : "FORWARD",
      "side" : "second"
    } ]
  }, {
    "id" : 2937,
    "type" : "Writer : table",
    "pact" : "Operator",
    "contents" : "Writer : table",
    "parallelism" : 4,
    "predecessors" : [ {
      "id" : 2935,
      "ship_strategy" : "shuffle by bucket",
      "side" : "second"
    } ]
  }, {
    "id" : 2938,
    "type" : "Global Committer : table",
    "pact" : "Operator",
    "contents" : "Global Committer : table",
    "parallelism" : 1,
    "predecessors" : [ {
      "id" : 2937,
      "ship_strategy" : "REBALANCE",
      "side" : "second"
    } ]
  }, {
    "id" : 2942,
    "type" : "end: Writer",
    "pact" : "Operator",
    "contents" : "end: Writer",
    "parallelism" : 1,
    "predecessors" : [ {
      "id" : 2938,
      "ship_strategy" : "FORWARD",
      "side" : "second"
    } ]
  } ]
}