Kai Zheng created HDFS-7674:
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Summary: Adding metrics for Erasure Coding
Key: HDFS-7674
URL: https://issues.apache.org/jira/browse/HDFS-7674
Project: Hadoop HDFS
Issue Type: Sub-task
Reporter: Kai Zheng
Assignee: Kai Zheng
As the design (in HDFS-7285) indicates, erasure coding involves non-trivial
impact and workload for NameNode, DataNode and client; it also allows
configurable and pluggable erasure codec and schema with flexible tradeoff
options (see HDFS-7337). To support necessary analysis and adjustment, we'd
better have various meaningful metrics for the EC support, like
encoding/decoding tasks, recovered blocks, read/transferred data size,
computation time and etc.
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