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https://issues.apache.org/jira/browse/HDDS-1105?focusedWorklogId=293647&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-293647
]
ASF GitHub Bot logged work on HDDS-1105:
----------------------------------------
Author: ASF GitHub Bot
Created on: 13/Aug/19 06:07
Start Date: 13/Aug/19 06:07
Worklog Time Spent: 10m
Work Description: swagle 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#discussion_r313231490
##########
File path:
hadoop-ozone/ozone-recon/src/main/java/org/apache/hadoop/ozone/recon/ReconServerConfigKeys.java
##########
@@ -114,7 +114,7 @@
public static final String OZONE_RECON_TASK_THREAD_COUNT_KEY =
"ozone.recon.task.thread.count";
- public static final int OZONE_RECON_TASK_THREAD_COUNT_DEFAULT = 1;
+ public static final int OZONE_RECON_TASK_THREAD_COUNT_DEFAULT = 5;
Review comment:
This should be set to a number of cores multiple instead.
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Issue Time Tracking
-------------------
Worklog Id: (was: 293647)
Time Spent: 1h 50m (was: 1h 40m)
> 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: 1h 50m
> 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.
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