Viet Nguyen created IMPALA-7854:
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Summary: Slow ALTER TABLE and LOAD DATA statements for tables with
large number of partitions
Key: IMPALA-7854
URL: https://issues.apache.org/jira/browse/IMPALA-7854
Project: IMPALA
Issue Type: Improvement
Components: Catalog
Affects Versions: Impala 2.12.0
Environment: 14 Nodes
Table in question has 20 columns, 3 partition columns, and 57,475 partitions
Reporter: Viet Nguyen
ALTER TABLE and LOAD DATA statements take minutes (9 minutes for ALTER TABLE
and 6 minutes for LOAD DATA) for tables with a large number of partitions.
Our workaround was to use Hive to perform the LOAD DATA and then perform a
REFRESH PARTITION using Impala.
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