Cloudera

FEBRUARY 14, 2024

Problem with too many snapshots Everytime a write operation occurs on an Iceberg table, a new snapshot is created. A bloated metadata.json file could increase both read/write times because a large metadata file needs to be read/written every time. You could also change the isolation level to snapshot isolation.

Strategy 57

Strategy Optimization Snapshot Metadata 57

Cloudera

JULY 14, 2023

They also provide a “ snapshot” procedure that creates an Iceberg table with a different name with the same underlying data. You could first create a snapshot table, run sanity checks on the snapshot table, and ensure that everything is in order. Hive creates Iceberg’s metadata files for the same exact table.

Snapshot 69

Snapshot Metadata Data Warehouse Testing 69

Cloudera

MAY 22, 2018

With Experiments, data scientists can run a batch job that will: create a snapshot of model code, dependencies, and configuration parameters necessary to train the model. save the built model container, along with metadata like who built or deployed it. save the built model container, along with metadata like who built or deployed it.

Data Science 41

Data Science Snapshot Machine Learning Metadata 41

Cloudera

FEBRUARY 8, 2024

The snapshotId of the source tables involved in the materialized view are also maintained in the metadata. Subsequently, these snapshot IDs are used to determine the delta changes that should be applied to the materialized view rows. Furthermore, it is partitioned on the d_year column.

Snapshot 88

Snapshot Metadata Cost-Benefit Data Warehouse 88

Cloudera

JULY 13, 2023

A range of Iceberg table analysis such as listing table’s data file, selecting table snapshot, partition filtering, and predicate filtering can be delegated through Iceberg Java API instead, obviating the need for each query engine to implement it themself. The data files and metadata files in Iceberg format are immutable.

Metadata 69

Metadata Snapshot Data Warehouse Statistics 69

Cloudera

APRIL 3, 2023

Every table change creates an Iceberg snapshot, this helps to resolve concurrency issues and allows readers to scan a stable table state every time. The table metadata is stored next to the data files under a metadata directory, which allows multiple engines to use the same table simultaneously. ID, TBL_ICEBERG_PART_2.NAME,

Data Warehouse 79

Data Warehouse Snapshot Metadata Cost-Benefit 79

Cloudera

DECEMBER 15, 2022

Only metadata will be regenerated. Newly generated metadata will then point to source data files as illustrated in the diagram below. . Iceberg tables supported on CDP, automatically inherit the centralized and persistent Shared Data Experience (SDX) services—security, metadata, and auditing—from your CDP environment. .

Metadata 76

Metadata Data Warehouse Snapshot Data Quality 76