xinyiZzz opened a new issue #6162:
URL: https://github.com/apache/incubator-doris/issues/6162
**Describe the bug**
Routine load import task, if there is `where_predicates`, in expr rewrite,
NullPointerException may be reported when extracting common factors, for example
```
CREATE ROUTINE LOAD load_name ON test COLUMNS (k1, k2, k3, k4, k5, k6, k10,
k11, k7, k8, k9),WHERE k1 between 10 and 13 or k2 is null or lower(k7)
regexp".*04$" or k10 > "2019-01-01" or k11 > "2019-01-01" FROM KAFKA (……);
```
Error:
```
java.lang.NullPointerException: null
at
org.apache.doris.rewrite.ExtractCommonFactorsRule.extractCommonFactors(ExtractCommonFactorsRule.java:151)
~[palo-fe.jar:3.4.0]
at
org.apache.doris.rewrite.ExtractCommonFactorsRule.apply(ExtractCommonFactorsRule.java:68)
~[palo-fe.jar:3.4.0]
at
org.apache.doris.rewrite.ExprRewriter.applyRuleOnce(ExprRewriter.java:82)
~[palo-fe.jar:3.4.0]
at org.apache.doris.rewrite.ExprRewriter.rewrite(ExprRewriter.java:76)
~[palo-fe.jar:3.4.0]
at
org.apache.doris.planner.LoadScanNode.initWhereExpr(LoadScanNode.java:85)
~[palo-fe.jar:3.4.0]
at
org.apache.doris.planner.LoadScanNode.initAndSetWhereExpr(LoadScanNode.java:60)
~[palo-fe.jar:3.4.0]
at
org.apache.doris.planner.StreamLoadScanNode.init(StreamLoadScanNode.java:144)
~[palo-fe.jar:3.4.0]
at
org.apache.doris.planner.StreamLoadPlanner.plan(StreamLoadPlanner.java:139)
~[palo-fe.jar:3.4.0]
at
org.apache.doris.load.routineload.RoutineLoadJob.plan(RoutineLoadJob.java:815)
~[palo-fe.jar:3.4.0]
at
org.apache.doris.load.routineload.KafkaTaskInfo.rePlan(KafkaTaskInfo.java:116)
~[palo-fe.jar:3.4.0]
at
org.apache.doris.load.routineload.KafkaTaskInfo.createRoutineLoadTask(KafkaTaskInfo.java:95)
~[palo-fe.jar:3.4.0]
at
org.apache.doris.load.routineload.RoutineLoadTaskScheduler.scheduleOneTask(RoutineLoadTaskScheduler.java:174)
~[palo-fe.jar:3.4.0]
at
org.apache.doris.load.routineload.RoutineLoadTaskScheduler.process(RoutineLoadTaskScheduler.java:108)
[palo-fe.jar:3.4.0]
at
org.apache.doris.load.routineload.RoutineLoadTaskScheduler.runAfterCatalogReady(RoutineLoadTaskScheduler.java:83)
[palo-fe.jar:3.4.0]
at
org.apache.doris.common.util.MasterDaemon.runOneCycle(MasterDaemon.java:58)
[palo-fe.jar:3.4.0]
at org.apache.doris.common.util.Daemon.run(Daemon.java:116)
[palo-fe.jar:3.4.0]
```
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