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[fix](explain) fix NPE when explain verbose with partition batch mode (#40969) #41231

Merged
merged 1 commit into from
Sep 24, 2024
Merged

[fix](explain) fix NPE when explain verbose with partition batch mode (#40969) #41231

merged 1 commit into from
Sep 24, 2024

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morningman
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bp #40969

@morningman
[fix](explain) fix NPE when explain verbose with partition batch mode (…
9f601f3 
…apache#40969)

If trigger "fetching partition in batch mode" feature, the `explain
verbose` for external table may cause NPE.
Because in batch mode, the scan range is not initialized in plan phase.

```
org.apache.doris.common.NereidsException: errCode = 2, detailMessage = java.lang.NullPointerException
        at org.apache.doris.qe.StmtExecutor.executeByNereids(StmtExecutor.java:767) ~[doris-fe.jar:1.2-SNAPSHOT]
        at org.apache.doris.qe.StmtExecutor.execute(StmtExecutor.java:591) ~[doris-fe.jar:1.2-SNAPSHOT]
        at org.apache.doris.qe.StmtExecutor.queryRetry(StmtExecutor.java:554) ~[doris-fe.jar:1.2-SNAPSHOT]
        at org.apache.doris.qe.StmtExecutor.execute(StmtExecutor.java:544) ~[doris-fe.jar:1.2-SNAPSHOT]
        at org.apache.doris.qe.ConnectProcessor.executeQuery(ConnectProcessor.java:323) ~[doris-fe.jar:1.2-SNAPSHOT]
        at org.apache.doris.qe.ConnectProcessor.handleQuery(ConnectProcessor.java:234) ~[doris-fe.jar:1.2-SNAPSHOT]
        at org.apache.doris.qe.MysqlConnectProcessor.handleQuery(MysqlConnectProcessor.java:194) ~[doris-fe.jar:1.2-SNAPSHOT]
        at org.apache.doris.qe.MysqlConnectProcessor.dispatch(MysqlConnectProcessor.java:222) ~[doris-fe.jar:1.2-SNAPSHOT]
        at org.apache.doris.qe.MysqlConnectProcessor.processOnce(MysqlConnectProcessor.java:281) ~[doris-fe.jar:1.2-SNAPSHOT]
        at org.apache.doris.mysql.ReadListener.lambda$handleEvent$0(ReadListener.java:52) ~[doris-fe.jar:1.2-SNAPSHOT]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) ~[?:?]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) ~[?:?]
        at java.lang.Thread.run(Thread.java:833) ~[?:?]
Caused by: org.apache.doris.common.AnalysisException: errCode = 2, detailMessage = java.lang.NullPointerException
        ... 13 more
Caused by: java.lang.NullPointerException
        at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:903) ~[guava-32.1.2-jre.jar:?]
        at com.google.common.collect.AbstractMultimap.putAll(AbstractMultimap.java:83) ~[guava-32.1.2-jre.jar:?]
        at com.google.common.collect.ArrayListMultimap.putAll(ArrayListMultimap.java:62) ~[guava-32.1.2-jre.jar:?]
        at org.apache.doris.datasource.FileScanNode.getNodeExplainString(FileScanNode.java:141) ~[doris-fe.jar:1.2-SNAPSHOT]
        at org.apache.doris.planner.PlanNode.getExplainString(PlanNode.java:548) ~[doris-fe.jar:1.2-SNAPSHOT]
        at org.apache.doris.planner.PlanFragment.getExplainString(PlanFragment.java:369) ~[doris-fe.jar:1.2-SNAPSHOT]
        at org.apache.doris.planner.Planner.getExplainString(Planner.java:93) ~[doris-fe.jar:1.2-SNAPSHOT]
        at org.apache.doris.nereids.NereidsPlanner.getExplainString(NereidsPlanner.java:627) ~[doris-fe.jar:1.2-SNAPSHOT]
        at org.apache.doris.nereids.trees.plans.commands.ExplainCommand.run(ExplainCommand.java:96) ~[doris-fe.jar:1.2-SNAPSHOT]
        at org.apache.doris.qe.StmtExecutor.executeByNereids(StmtExecutor.java:736) ~[doris-fe.jar:1.2-SNAPSHOT]
        ... 12 more
```
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@morningman
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run buildall

@morningman morningman merged commit fc0b4b9 into apache:branch-2.1 Sep 24, 2024
21 of 22 checks passed
@yiguolei yiguolei mentioned this pull request Nov 6, 2024
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