[HDDS-6010] EC: Create ECInputStream wrapper to choose between reconstruction and normal reads. - ASF JIRA

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Details

Type: Sub-task
Status: Resolved
Priority: Major
Resolution: Fixed
Affects Version/s: None
Fix Version/s: EC-Branch
Component/s: Ozone Client
Labels:
- pull-request-available

Description

When all data locations are available, the most efficient reader is ECBlockInputStream. It also uses less memory as it does not need to buffer the full stripe. When some data locations are missing, we need to use ECBlockReconstructedStripeInputStream and ECBlockReconstructedInputStream together. There needs to be a wrapper class which creates and uses the correct underlying stream depending on data location availability.