virajjasani commented on a change in pull request #3438:
URL: https://github.com/apache/hbase/pull/3438#discussion_r661585320
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File path:
hbase-server/src/main/java/org/apache/hadoop/hbase/master/AssignmentManager.java
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@@ -253,6 +253,28 @@
// are persisted in meta with a state store
private final RegionStateStore regionStateStore;
+ /**
+ * Min version to consider for moving system tables regions to higher
+ * versioned RS. If RS has higher version than rest of the cluster but that
+ * version is less than this value, we should not move system table regions
+ * to that RS. If RS has higher version than rest of the cluster but that
+ * version is greater than or equal to this value, we should move system
+ * table regions to that RS. This is optional config and default value is
+ * empty string ({@link #DEFAULT_MIN_VERSION_MOVE_SYS_TABLES_CONFIG}).
+ * For instance, if we do not want meta region to be moved to RS with higher
+ * version until that version is >= 2.0.0, then we can configure
+ * "hbase.min.version.move.system.tables" as "2.0.0".
+ * When operator uses this config, it should be used with care, meaning
+ * we should be confident that even if user table regions come to RS with
+ * higher version (that rest of cluster), it would not cause any
Review comment:
@apurtell Created master branch PR #3439 yesterday. Will create branch-2
PR as well.
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