Remove Big Data Remove Broadcasting Remove Metadata
article thumbnail

Run Trino queries 2.7 times faster with Amazon EMR 6.15.0

AWS Big Data

Benchmark setup In our testing, we used the 3 TB dataset stored in Amazon S3 in compressed Parquet format and metadata for databases and tables is stored in the AWS Glue Data Catalog. This benchmark uses unmodified TPC-DS data schema and table relationships. He has been focusing in the big data analytics space since 2014.

Metadata 119
article thumbnail

Accelerate Amazon Redshift Data Lake queries with AWS Glue Data Catalog Column Statistics

AWS Big Data

However, even the most powerful systems can experience performance degradation if they encounter anti-patterns like grossly inaccurate table statistics, such as the row count metadata. This can have a significant impact on overall query performance.

Data Lake 115
Insiders

Sign Up for our Newsletter

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

article thumbnail

Three Emerging Analytics Products Derived from Value-driven Data Innovation and Insights Discovery in the Enterprise

Rocket-Powered Data Science

In some cases, the precursor can occur sufficiently in advance of the tidal wave’s predicted arrival at inhabited shores, thereby enabling early warnings to be broadcasted. A cognitive person is curious about odd things that they see and hear—things or circumstances or behaviors that seem out of context, unusual, and surprising.

article thumbnail

Achieve high availability in Amazon OpenSearch Multi-AZ with Standby enabled domains: A deep dive into failovers

AWS Big Data

This ensures that no read traffic is sent to data nodes in the standby Availability Zone. These systems rely on an active leader node to identify failures or delays and then broadcast this information to all nodes. In this approach, active zones are assigned a weight of 1, and the standby zone is assigned a weight of 0.

Metadata 119
article thumbnail

Improved resiliency with cluster manager task throttling for Amazon OpenSearch Service

AWS Big Data

Amazon OpenSearch clusters are comprised of data nodes and cluster manager nodes. The leader node is the authority on the metadata in the cluster, which is called cluster state. Any changes to the cluster state are processed by the leader node and broadcasted to all of the nodes in the cluster.

article thumbnail

Improving Data Processing with Spark 3.0 & Delta Lake

Smart Data Collective

Developed at Databricks, “Delta Lake is an open-source data storage layer that runs on the existing Data Lake and is fully cooperative with Apache Spark APIs. Along with the ability to implement ACID transactions and scalable metadata handling, Delta Lakes can also unify the streaming and batch data processing”. .