924060929 commented on code in PR #42680:
URL: https://github.com/apache/doris/pull/42680#discussion_r1837447860
##########
be/src/olap/delta_writer_v2.cpp:
##########
@@ -125,6 +125,9 @@ Status DeltaWriterV2::init() {
context.partial_update_info = _partial_update_info;
context.memtable_on_sink_support_index_v2 = true;
+ auto tablet =
DORIS_TRY(ExecEnv::GetInstance()->storage_engine().get_tablet(_req.tablet_id));
Review Comment:
I meet this exception when I insert rows into olap table if the tablet not
exist in backend of the instance:
```sql
CREATE TABLE `a4` (
`date_time` date NULL
) ENGINE=OLAP
DUPLICATE KEY(`date_time`)
PARTITION BY RANGE(`date_time`)
(PARTITION p1 VALUES [('0000-01-01'), ('2020-01-02')),
PARTITION p2 VALUES [('2020-01-02'), ('2020-01-03')),
PARTITION p3 VALUES [('2020-01-03'), ('2020-01-04')))
DISTRIBUTED BY HASH(`date_time`) BUCKETS 1
PROPERTIES (
"replication_allocation" = "tag.location.default: 1",
"min_load_replica_num" = "-1",
"is_being_synced" = "false",
"storage_medium" = "hdd",
"storage_format" = "V2",
"inverted_index_storage_format" = "V2",
"light_schema_change" = "true",
"disable_auto_compaction" = "false",
"enable_single_replica_compaction" = "false",
"group_commit_interval_ms" = "10000",
"group_commit_data_bytes" = "134217728"
);
MySQL root@127.0.0.1:test2> insert into a4 values('2020-01-03');
Query OK, 1 row affected
Time: 0.062s
MySQL root@127.0.0.1:test2> insert into a4 values('2020-01-03');
(1105, 'errCode = 2, detailMessage = (192.168.126.3)[INTERNAL_ERROR]failed
to get tablet: 180160, reason: tablet does not exist. 192.168.126.3')
MySQL root@127.0.0.1:test2> insert into a4 values('2020-01-03');
Query OK, 1 row affected
Time: 0.050s
MySQL root@127.0.0.1:test2> insert into a4 values('2020-01-03');
(1105, 'errCode = 2, detailMessage = (192.168.126.3)[INTERNAL_ERROR]failed
to get tablet: 180160, reason: tablet does not exist. 192.168.126.3')
MySQL root@127.0.0.1:test2> insert into a4 values('2020-01-03');
Query OK, 1 row affected
Time: 0.051s
MySQL root@127.0.0.1:test2> insert into a4 values('2020-01-03');
(1105, 'errCode = 2, detailMessage = (192.168.126.3)[INTERNAL_ERROR]failed
to get tablet: 180160, reason: tablet does not exist. 192.168.126.3')
```
for the above sql, I have 2 backends in doris(192.168.126.2 and
192.168.126.3), and create `a4` with one tablet(exists in 192.168.126.2), the
insert statement will select a random backend to execute. when the backend of
the instance not contains the tablets of `a4`, you will meet the exception
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