Cloudera

FEBRUARY 8, 2024

Subsequently, these snapshot IDs are used to determine the delta changes that should be applied to the materialized view rows. Hive does this by asking the Iceberg library to return only the rows inserted since that table’s last snapshot when the materialized view was last rebuilt/created.

Snapshot 90

Snapshot Metadata Cost-Benefit Data Warehouse 90

Cloudera

NOVEMBER 13, 2020

Impala’s planner does not do exhaustive cost-based optimization. Instead, it makes cost-based decisions with more limited scope (for example when comparing join strategies) and applies rule-based and heuristic optimizations for common query patterns. As we discussed previously, Impala tries to cache and optimize this metadata.

Optimization 143

Optimization Metadata Statistics Cost-Benefit 143

Corinium

APRIL 25, 2019

For example auto insurance companies offering to capture real-time driving statistics from policy-holders’ cars to encourage and reward safe driving. And it’s become a hyper-competitive business, so enhancing customer service through data is critical for maintaining customer loyalty. That’s the reward. This stuff works.

Insurance 150

Insurance Risk IoT Cost-Benefit 150