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https://issues.apache.org/jira/browse/HDDS-1624?focusedWorklogId=253972&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-253972
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ASF GitHub Bot logged work on HDDS-1624:
----------------------------------------
Author: ASF GitHub Bot
Created on: 04/Jun/19 19:22
Start Date: 04/Jun/19 19:22
Worklog Time Spent: 10m
Work Description: avijayanhwx commented on pull request #882: HDDS-1624 :
Refactor operations inside the bucket lock in OM key write.
URL: https://github.com/apache/hadoop/pull/882#discussion_r290457200
##########
File path:
hadoop-hdds/common/src/main/java/org/apache/hadoop/utils/db/RDBTable.java
##########
@@ -119,6 +119,16 @@ public boolean isEmpty() throws IOException {
}
}
+ @Override
+ public boolean isExist(byte[] key) throws IOException {
+ try {
+ return db.get(handle, key) != null;
+ } catch (RocksDBException e) {
+ throw toIOException(
+ "Failed to check if given key exists", e);
Review comment:
Addressed
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Issue Time Tracking
-------------------
Worklog Id: (was: 253972)
Time Spent: 3h 10m (was: 3h)
> Refactor operations inside the bucket lock in OM key write.
> -----------------------------------------------------------
>
> Key: HDDS-1624
> URL: https://issues.apache.org/jira/browse/HDDS-1624
> Project: Hadoop Distributed Data Store
> Issue Type: Bug
> Components: Ozone Manager
> Reporter: Aravindan Vijayan
> Assignee: Aravindan Vijayan
> Priority: Critical
> Labels: pull-request-available
> Fix For: 0.5.0
>
> Time Spent: 3h 10m
> Remaining Estimate: 0h
>
> There are a few steps that are done inside the OM bucket lock that are lock
> invariant and can be done outside the lock. This patch refactors those steps.
> It also adds an isExist API in the metadata store so that we dont need to
> deserialize the byte[] to Object while doing a simple _table.get(key) !=
> null_ check.
> On applying the patch, the OM + SCM (With dummy datanodes) write performance
> improves by around 3 - 6x based on number of existing keys in the OM RocksDB.
> Thanks to [~nandakumar131] who helped with this patch.
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