xy720 opened a new pull request, #25728:
URL: https://github.com/apache/doris/pull/25728
## Proposed changes
In version 1.2, We have found a lot of tablets with replica_id which is 0 in
its tablet meta, just like:
```
{
"table_id": 4882109,
"partition_id": 4882108,
"tablet_id": 6701853,
"schema_hash": 2015010729,
"shard_id": 4,
"creation_time": 1688004194,
"cumulative_layer_point": -1,
"tablet_state": "PB_RUNNING",
"schema": {
"keys_type": "UNIQUE_KEYS",
"column": [
...
],
"num_short_key_columns": 1,
"num_rows_per_row_block": 1024,
"compress_kind": "COMPRESS_LZ4",
"next_column_unique_id": 87,
"is_in_memory": false,
"delete_sign_idx": 86,
"sequence_col_idx": -1,
"sort_type": "LEXICAL",
"sort_col_num": 0,
"compression_type": "LZ4F",
"schema_version": 0,
"disable_auto_compaction": false,
"version_col_idx": -1
},
"rs_metas": [
...
],
"replica_id": 0,
"storage_policy": "",
"enable_unique_key_merge_on_write": false
}
```
And I found that all these tablets clone from other backends.
Here is why:
In #6814, we use constructor `TabletMeta::TabletMeta(const TabletMeta& b)`
in `revise_tablet_meta` method.
And in #9971, we introduce `replica_id` into tablet meta, but we forgot to
update `TabletMeta::TabletMeta(const TabletMeta& b)` to set `replica_id`
So clone task which call `revise_tablet_meta` may cause `replica_id` in
tablet meta to 0.
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