[Bug] truncate partition with NPE

[morningman]

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Version

1.0.0

What's Wrong?

CREATE TABLE tbl (
  `date_id` date NULL,
  `column2` tinyint(4) NULL
) ENGINE=OLAP
DUPLICATE KEY(`date_id`, `column2`)
PARTITION BY RANGE(`date_id`)
(
PARTITION p20200809 VALUES [('2020-08-09'), ('2020-08-10')),
PARTITION P20200810 VALUES [('2020-08-10'), ('2020-08-11')),
PARTITION P20200811 VALUES [('2020-08-11'), ('2020-08-12')),
PARTITION p20200812 VALUES [('2020-08-12'), ('2020-08-13')),
)
DISTRIBUTED BY HASH(`client_id`) BUCKETS 1
PROPERTIES (
"replication_allocation" = "tag.location.default: 1"
);

truncate table tbl partition(P20200809);

Error:

java.lang.NullPointerException: null
        at org.apache.doris.catalog.Catalog.truncateTable(Catalog.java:6782) ~[palo-fe.jar:1.0-SNAPSHOT]
        at org.apache.doris.qe.DdlExecutor.execute(DdlExecutor.java:246) ~[palo-fe.jar:1.0-SNAPSHOT]
        at org.apache.doris.qe.StmtExecutor.handleDdlStmt(StmtExecutor.java:1520) ~[palo-fe.jar:1.0-SNAPSHOT]
        at org.apache.doris.qe.StmtExecutor.execute(StmtExecutor.java:432) ~[palo-fe.jar:1.0-SNAPSHOT]
        at org.apache.doris.qe.StmtExecutor.execute(StmtExecutor.java:307) ~[palo-fe.jar:1.0-SNAPSHOT]
        at org.apache.doris.qe.ConnectProcessor.handleQuery(ConnectProcessor.java:212) ~[palo-fe.jar:1.0-SNAPSHOT]
        at org.apache.doris.qe.ConnectProcessor.dispatch(ConnectProcessor.java:349) ~[palo-fe.jar:1.0-SNAPSHOT]
        at org.apache.doris.qe.ConnectProcessor.processOnce(ConnectProcessor.java:538) ~[palo-fe.jar:1.0-SNAPSHOT]
        at org.apache.doris.mysql.nio.ReadListener.lambda$handleEvent$0(ReadListener.java:50) ~[palo-fe.jar:1.0-SNAPSHOT]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) ~[?:1.8.0_131]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) ~[?:1.8.0_131]
        at java.lang.Thread.run(Thread.java:748) ~[?:1.8.0_131]

What You Expected?

truncate ok

How to Reproduce?

This is because the real partition name is p20200809, but in truncate stmt,
it is P20200809.
The partition name is case insensitive, but we didn't handle it correctly in truncate operation.

Anything Else?

No response

Are you willing to submit PR?

• Yes I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct