ndimiduk commented on a change in pull request #2523:
URL: https://github.com/apache/hbase/pull/2523#discussion_r508883897
##########
File path:
hbase-server/src/main/java/org/apache/hadoop/hbase/master/normalizer/SimpleRegionNormalizer.java
##########
@@ -71,38 +76,81 @@
static final String MERGE_MIN_REGION_SIZE_MB_KEY =
"hbase.normalizer.merge.min_region_size.mb";
static final int DEFAULT_MERGE_MIN_REGION_SIZE_MB = 1;
- private Configuration conf;
private MasterServices masterServices;
- private boolean splitEnabled;
- private boolean mergeEnabled;
- private int minRegionCount;
- private Period mergeMinRegionAge;
- private int mergeMinRegionSizeMb;
+
+ /** Ensure configuration changes are applied atomically. */
+ private final ReadWriteLock configUpdateLock = new ReentrantReadWriteLock();
+ @GuardedBy("configUpdateLock") private Configuration conf;
Review comment:
I'm not sure about "all" uses, it just seemed prudent for this use. I'm
also not sure our static analysis tools honor this `GuardedBy` annotation, I
have a TODO for myself to track this down and see if it's really supported.
----------------------------------------------------------------
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
