Chandni Singh created APEXMALHAR-2063:
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Summary: Integrate WAL to FS WindowDataManager
Key: APEXMALHAR-2063
URL: https://issues.apache.org/jira/browse/APEXMALHAR-2063
Project: Apache Apex Malhar
Issue Type: Improvement
Reporter: Chandni Singh
Assignee: Chandni Singh
FS Window Data Manager is used to save meta-data that helps in replaying tuples
every completed application window after failure. For this it saves meta-data
in a file per window. Having multiple small size files on hdfs cause issues as
highlighted here:
http://blog.cloudera.com/blog/2009/02/the-small-files-problem/
Instead FS Window Data Manager can utilize the WAL to write data and maintain a
mapping of how much data was flushed to WAL each window.
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