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Posted to issues@flink.apache.org by "Jane Chan (Jira)" <ji...@apache.org> on 2022/07/14 06:36:00 UTC
[jira] [Commented] (FLINK-26051) one sql has row_number =1 and the subsequent SQL has "case when" and "where" statement result Exception : The window can only be ordered in ASCENDING mode
[ https://issues.apache.org/jira/browse/FLINK-26051?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17566669#comment-17566669 ]
Jane Chan commented on FLINK-26051:
-----------------------------------
Sorry for being late. I will open PR asap.
> one sql has row_number =1 and the subsequent SQL has "case when" and "where" statement result Exception : The window can only be ordered in ASCENDING mode
> ----------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: FLINK-26051
> URL: https://issues.apache.org/jira/browse/FLINK-26051
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / Planner
> Affects Versions: 1.12.2, 1.14.4
> Reporter: chuncheng wu
> Assignee: Jane Chan
> Priority: Major
> Attachments: image-2022-02-10-20-13-14-424.png, image-2022-02-11-11-18-20-594.png, image-2022-06-17-21-28-54-886.png
>
>
> hello,
> i have 2 sqls. One sql (sql0) is "select xx from ( ROW_NUMBER statment) where rn=1" and the other one (sql1) is "s{color:#505f79}elect ${fields} from result where ${filter_conditions}{color}" . The fields quoted in sql1 has one "case when" field .The two sql can work well seperately.but if they combine it results the exception as follow . It happen in the occasion when logical plan turn into physical plan :
>
> {code:java}
> org.apache.flink.table.api.TableException: The window can only be ordered in ASCENDING mode.
> at org.apache.flink.table.planner.plan.nodes.physical.stream.StreamExecOverAggregate.translateToPlanInternal(StreamExecOverAggregate.scala:98)
> at org.apache.flink.table.planner.plan.nodes.physical.stream.StreamExecOverAggregate.translateToPlanInternal(StreamExecOverAggregate.scala:52)
> at org.apache.flink.table.planner.plan.nodes.exec.ExecNode$class.translateToPlan(ExecNode.scala:59)
> at org.apache.flink.table.planner.plan.nodes.physical.stream.StreamExecOverAggregateBase.translateToPlan(StreamExecOverAggregateBase.scala:42)
> at org.apache.flink.table.planner.plan.nodes.physical.stream.StreamExecCalc.translateToPlanInternal(StreamExecCalc.scala:54)
> at org.apache.flink.table.planner.plan.nodes.physical.stream.StreamExecCalc.translateToPlanInternal(StreamExecCalc.scala:39)
> at org.apache.flink.table.planner.plan.nodes.exec.ExecNode$class.translateToPlan(ExecNode.scala:59)
> at org.apache.flink.table.planner.plan.nodes.physical.stream.StreamExecCalcBase.translateToPlan(StreamExecCalcBase.scala:38)
> at org.apache.flink.table.planner.delegation.StreamPlanner$$anonfun$translateToPlan$1.apply(StreamPlanner.scala:66)
> at org.apache.flink.table.planner.delegation.StreamPlanner$$anonfun$translateToPlan$1.apply(StreamPlanner.scala:65)
> at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
> at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
> at scala.collection.Iterator$class.foreach(Iterator.scala:891)
> at scala.collection.AbstractIterator.foreach(Iterator.scala:1334)
> at scala.collection.IterableLike$class.foreach(IterableLike.scala:72)
> at scala.collection.AbstractIterable.foreach(Iterable.scala:54)
> at scala.collection.TraversableLike$class.map(TraversableLike.scala:234)
> at scala.collection.AbstractTraversable.map(Traversable.scala:104)
> at org.apache.flink.table.planner.delegation.StreamPlanner.translateToPlan(StreamPlanner.scala:65)
> at org.apache.flink.table.planner.delegation.StreamPlanner.explain(StreamPlanner.scala:103)
> at org.apache.flink.table.planner.delegation.StreamPlanner.explain(StreamPlanner.scala:42)
> at org.apache.flink.table.api.internal.TableEnvironmentImpl.explainInternal(TableEnvironmentImpl.java:630)
> at org.apache.flink.table.api.internal.TableImpl.explain(TableImpl.java:582)
> at com.meituan.grocery.data.flink.test.BugTest.testRowNumber(BugTest.java:69)
> at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
> at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.base/java.lang.reflect.Method.invoke(Method.java:568)
> at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:725)
> at org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60){code}
> In the stacktrace above , rownumber() 's physical rel which is StreamExecRank In nomal change to StreamExecOverAggregate . The StreamExecOverAggregate rel has a window= ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW which i never add .Oddly,if you remove the "case when" field or the "where" statement in sql1 ,the program will work well, the exception disappear. In the same time, rownumber() 's physical rel change back to StreamExecRank. Its confusing me a lot
>
> example code :
> {code:java}
> @Test
> public void testRowNumber() throws Exception {
> StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
> EnvironmentSettings mySetting = EnvironmentSettings
> .newInstance()
> .useBlinkPlanner()
> .inStreamingMode()
> .build();
> StreamTableEnvironment tableEnv = StreamTableEnvironment.create(env);
> env.setParallelism(1);
> Configuration configuration = tableEnv.getConfig().getConfiguration();
> DataStream<Tuple12<String, Integer, Integer, String, Integer, Integer, Integer, Integer,
> Integer, String, String, String>> oriStream = env.addSource(new CustomSourceRowNumber());
> Table testTable = tableEnv.fromDataStream(
> oriStream,
> $("biz_bill_no"),
> $("task_type"),
> $("task_mode"),
> $("parent_task_no"),
> $("total_stage_num"),
> $("current_stage_index"),
> $("use_pre_task_owner"),
> $("poi_type"),
> $("biz_origin_bill_type"),
> $("sowing_task_no"),
> $("dt"),
> $("sowing_task_detail_id"));
> tableEnv.createTemporaryView("wosOutSowingTaskDetail", testTable);
> //sql0 ,select xx from ( ROW_NUMBER stament) where rn=1
> Table wosOutSowingTaskDetailLatest = tableEnv.sqlQuery(
> "SELECT `biz_bill_no`\n" +
> ",task_type\n" +
> ",task_mode\n" +
> ",parent_task_no\n" +
> ",total_stage_num\n" +
> ",current_stage_index\n" +
> ",use_pre_task_owner\n" +
> ",poi_type\n" +
> ",biz_origin_bill_type\n" +
> ",sowing_task_no\n" +
> " FROM (\n" +
> " SELECT *,\n" +
> " ROW_NUMBER() OVER(PARTITION BY dt,sowing_task_detail_id ORDER BY task_type desc) AS rn\n"
> +
> " FROM wosOutSowingTaskDetail\n" +
> " ) tmp\n" +
> " WHERE rn = 1");
> tableEnv.createTemporaryView("wosOutSowingTaskDetailLatest", wosOutSowingTaskDetailLatest);
> //sql , select ${fields} from result where ${filter_conditions}
> //oddly,if we remove the "CASE WHEN" field ```"CASE WHEN task_mode = 51 THEN parent_task_no\n"
> //+ " WHEN task_mode = 40 AND total_stage_num >= 2 AND current_stage_index >= 2 AND
> //use_pre_task_owner = 1 THEN parent_task_no\n"
> //+ " ELSE sowing_task_no END AS parent_task_no_cw\n"```,the program will work well without it.
> Table resultTable = tableEnv.sqlQuery("SELECT\n" +
> "biz_bill_no\n" +
> ", CASE WHEN task_mode = 51 THEN parent_task_no\n" +
> " WHEN task_mode = 40 AND total_stage_num >= 2 AND current_stage_index >= 2 AND use_pre_task_owner = 1 THEN parent_task_no\n" +
> " ELSE sowing_task_no END AS parent_task_no_cw\n" +
> ",parent_task_no"
> + ",sowing_task_no, "
> + "task_type, task_mode, "
> + "total_stage_num, "
> + "current_stage_index,"
> + "use_pre_task_owner \n" +
> "FROM wosOutSowingTaskDetailLatest\n" +
> "WHERE task_type = 21\n" +
> "AND task_mode IN (51, 40)\n" +
> "AND poi_type = 2\n" +
> "AND biz_origin_bill_type not in (111,112,113,114)");
>
> System.out.println(resultTable.explain());
> }
> class CustomSourceRowNumber implements SourceFunction<Tuple12<String, Integer, Integer, String, Integer, Integer,
> Integer, Integer,
> Integer, String, String, String>> {
> private boolean isRuning = true; @Override
> public void run(
> SourceContext<Tuple12<String, Integer, Integer, String, Integer, Integer, Integer, Integer,
> Integer, String, String, String>> sourceContext) throws Exception {
> while (isRuning) { sourceContext.collect(Tuple12.of("xxx",
> 21,
> 51,
> "yyy",
> 1,
> 1,
> 0,
> 2,
> 110,
> "zzz",
> "aaa",
> "bbb"));
> sourceContext.collect(Tuple12.of("xxx",
> 21,
> 40,
> "yyy",
> 2,
> 2,
> 1,
> 2,
> 110,
> "zzz",
> "aaa",
> "bbb"));
> Thread.sleep(Integer.MAX_VALUE);
> }
> } @Override
> public void cancel() {
> isRuning = false;
> }
> } {code}
> System.out.println
> {code:java}
> SQL 0 Plan:
> == Abstract Syntax Tree ==
> LogicalProject(biz_bill_no=[$0], task_type=[$1], task_mode=[$2], parent_task_no=[$3], total_stage_num=[$4], current_stage_index=[$5], use_pre_task_owner=[$6], poi_type=[$7], biz_origin_bill_type=[$8], sowing_task_no=[$9])
> +- LogicalFilter(condition=[=($12, 1)])
> +- LogicalProject(biz_bill_no=[$0], task_type=[$1], task_mode=[$2], parent_task_no=[$3], total_stage_num=[$4], current_stage_index=[$5], use_pre_task_owner=[$6], poi_type=[$7], biz_origin_bill_type=[$8], sowing_task_no=[$9], dt=[$10], sowing_task_detail_id=[$11], rn=[ROW_NUMBER() OVER (PARTITION BY $10, $11 ORDER BY $1 DESC NULLS LAST)])
> +- LogicalTableScan(table=[[default_catalog, default_database, wosOutSowingTaskDetail]])
> == Optimized Logical Plan ==
> Calc(select=[biz_bill_no, task_type, task_mode, parent_task_no, total_stage_num, current_stage_index, use_pre_task_owner, poi_type, biz_origin_bill_type, sowing_task_no], changelogMode=[I,UA,D])
> +- Rank(strategy=[AppendFastStrategy], rankType=[ROW_NUMBER], rankRange=[rankStart=1, rankEnd=1], partitionBy=[dt, sowing_task_detail_id], orderBy=[task_type DESC], select=[biz_bill_no, task_type, task_mode, parent_task_no, total_stage_num, current_stage_index, use_pre_task_owner, poi_type, biz_origin_bill_type, sowing_task_no, dt, sowing_task_detail_id], changelogMode=[I,UA,D])
> +- Exchange(distribution=[hash[dt, sowing_task_detail_id]], changelogMode=[I])
> +- DataStreamScan(table=[[default_catalog, default_database, wosOutSowingTaskDetail]], fields=[biz_bill_no, task_type, task_mode, parent_task_no, total_stage_num, current_stage_index, use_pre_task_owner, poi_type, biz_origin_bill_type, sowing_task_no, dt, sowing_task_detail_id], changelogMode=[I])
> == Physical Execution Plan ==
> Stage 1 : Data Source
> content : Source: Custom Source
> Stage 7 : Operator
> content : SourceConversion(table=[default_catalog.default_database.wosOutSowingTaskDetail], fields=[biz_bill_no, task_type, task_mode, parent_task_no, total_stage_num, current_stage_index, use_pre_task_owner, poi_type, biz_origin_bill_type, sowing_task_no, dt, sowing_task_detail_id])
> ship_strategy : FORWARD
> Stage 9 : Operator
> content : Rank(strategy=[AppendFastStrategy], rankType=[ROW_NUMBER], rankRange=[rankStart=1, rankEnd=1], partitionBy=[dt, sowing_task_detail_id], orderBy=[task_type DESC], select=[biz_bill_no, task_type, task_mode, parent_task_no, total_stage_num, current_stage_index, use_pre_task_owner, poi_type, biz_origin_bill_type, sowing_task_no, dt, sowing_task_detail_id])
> ship_strategy : HASH
> Stage 10 : Operator
> content : Calc(select=[biz_bill_no, task_type, task_mode, parent_task_no, total_stage_num, current_stage_index, use_pre_task_owner, poi_type, biz_origin_bill_type, sowing_task_no])
> ship_strategy : FORWARD
> SQL 1 Plan:
> org.apache.flink.table.api.TableException: The window can only be ordered in ASCENDING mode.{code}
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