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Sqoop command for importing multiple tables

Spark/Big Dataeasy0.5 min readPremium

**Single Command**: `sqoop import-all-tables` with `--exclude-tables` for large/irrelevant tables. ```bash sqoop import-all-tables --connect jdbc:mysql://host/sales_db \ --username user -P --warehouse-dir /user/hive/warehouse \ --exclude-tables audit_log,temp_data...

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Expert Answer

90 wordsIncludes code

Single Command: sqoop import-all-tables with --exclude-tables for large/irrelevant tables.

sqoop import-all-tables --connect jdbc:mysql://host/sales_db \
  --username user -P --warehouse-dir /user/hive/warehouse \
  --exclude-tables audit_log,temp_data --num-mappers 4

Why Not Always import-all-tables: (1) No per-table --split-by—Sqoop picks primary key; composite or missing PK causes single-mapper. (2) All-or-nothing—one failure fails all. (3) No per-table incremental.

Scalability Trade-offs: Parallelize with separate jobs (Airflow DAG, one task per table). Each table gets tuned --num-mappers and --split-by.

Cost Implications: import-all-tables simpler but slower for heterogeneous tables. Table-by-table enables spot clusters per table and incremental per table.

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