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data migration: add an example Parquet file name (#16192) (#16194) #16197

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Jan 19, 2024
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data migration: add an example Parquet file name (#16192) (#16194) #16197

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This is an automated cherry-pick of #16192
hfxsd Jan 19, 2024
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Delete ddl-v2.md
hfxsd Jan 19, 2024
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2 changes: 1 addition & 1 deletion migrate-from-parquet-files-to-tidb.md
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Expand Up @@ -41,7 +41,7 @@ Each table in Hive can be exported to parquet files by annotating `STORED AS PAR
DROP TABLE temp;
```

3. The parquet files exported from Hive might not have the `.parquet` suffix and cannot be correctly identified by TiDB Lightning. Therefore, before importing the files, you need to rename the exported files and add the `.parquet` suffix.
3. The parquet files exported from Hive might not have the `.parquet` suffix and cannot be correctly identified by TiDB Lightning. Therefore, before importing the files, you need to rename the exported files and add the `.parquet` suffix to change the full filename to a format that TiDB Lightning recognizes, for example, `${db_name}. ${table_name}.parquet`. For more information about file types and patterns, see [TiDB Lightning Data Sources](/tidb-lightning/tidb-lightning-data-source.md). You can also match data files by setting correct [customized expressions](/tidb-lightning/tidb-lightning-data-source.md#match-customized-files).

4. Put all the parquet files in a unified directory, for example, `/data/my_datasource/` or `s3://my-bucket/sql-backup`. TiDB Lightning will recursively search for all `.parquet` files in this directory and its subdirectories.

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