[HDFS-8672] Erasure Coding: Add EC-related Metrics to NN (seperate striped blocks count from UnderReplicatedBlocks count)

• Type: Sub-task
• Status: Resolved
• Priority: Minor
• Resolution: Duplicate
• Labels: hdfs-ec-3.0-nice-to-have
• Assignee: Manoj Govindassamy
• Reporter: Walter Su
• Created: 26/Jun/15 03:57
• Updated: 19/Jun/17 23:39
• Resolved: 19/Jun/17 23:39

Description

1. MissingBlocks metric is updated in HDFS-8461 so it includes striped blocks.
2. CorruptBlocks metric is updated in HDFS-8619 so it includes striped blocks.
3. UnderReplicatedBlocks and PendingReplicationBlocks includes striped blocks (HDFS-7912).

This jira aims to seperate striped blocks count from UnderReplicatedBlocks count.

EC file recovery need coding. It's more expensive than block duplication.
It's necessary to seperate striped blocks count from UnderReplicatedBlocks count. So user can know what's going on.

Issue Links

• duplicates: HDFS-10999 Introduce separate stats for Replicated and Erasure Coded Blocks apart from the current Aggregated stats
• Is contained by: HDFS-7674 [umbrella] Adding metrics for Erasure Coding