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How is impala metadata managed?
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Answer / Jayant Srivastava
Apache Impala uses a centralized metadata service called the Catalog Service to manage metadata information. The Catalog Service stores information about tables, partitions, columns, and other metadata objects in HDFS or HBase. When a query is executed, Impala communicates with the Catalog Service to retrieve the necessary metadata, which it uses to access and process data.
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