![]() HDFS provides best-effort persistence guarantees for Lazy Persist Writes. The Data Nodes will flush in-memory data to disk asynchronously thus removing expensive disk IO and checksum computations from the performance-sensitive IO path, hence we call such writes Lazy Persist writes. HDFS supports writing to off-heap memory managed by the Data Nodes. ![]() Running Applications in runC Containers.Running Applications in Docker Containers.
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