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ASF GitHub Bot logged work on HDDS-1105: ---------------------------------------- Author: ASF GitHub Bot Created on: 19/Aug/19 17:47 Start Date: 19/Aug/19 17:47 Worklog Time Spent: 10m Work Description: hanishakoneru commented on pull request #1259: HDDS-1105 : Add mechanism in Recon to obtain DB snapshot 'delta' updates from Ozone Manager URL: https://github.com/apache/hadoop/pull/1259 ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org Issue Time Tracking ------------------- Worklog Id: (was: 297330) Time Spent: 3.5h (was: 3h 20m) > Add mechanism in Recon to obtain DB snapshot 'delta' updates from Ozone > Manager. > -------------------------------------------------------------------------------- > > Key: HDDS-1105 > URL: https://issues.apache.org/jira/browse/HDDS-1105 > Project: Hadoop Distributed Data Store > Issue Type: Sub-task > Reporter: Aravindan Vijayan > Assignee: Aravindan Vijayan > Priority: Major > Labels: pull-request-available > Time Spent: 3.5h > Remaining Estimate: 0h > > *Some context* > The FSCK server will periodically invoke this OM API passing in the most > recent sequence number of its own RocksDB instance. The OM will use the > RockDB getUpdateSince() API to answer this query. Since the getUpdateSince > API only works against the RocksDB WAL, we have to configure OM RocksDB WAL > (https://github.com/facebook/rocksdb/wiki/Write-Ahead-Log) with sufficient > max size to make this API useful. If the OM cannot get all transactions since > the given sequence number (due to WAL flushing), it can error out. In that > case the FSCK server can fall back to getting the entire checkpoint snapshot > implemented in HDDS-1085. -- This message was sent by Atlassian Jira (v8.3.2#803003) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org