Umeshkumar9414 commented on code in PR #8237:
URL: https://github.com/apache/hbase/pull/8237#discussion_r3248679228
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hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncTableRegionLocator.java:
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@@ -112,6 +113,54 @@ default CompletableFuture<List<HRegionLocation>>
getRegionLocations(byte[] row)
*/
CompletableFuture<List<HRegionLocation>> getAllRegionLocations();
+ /**
+ * Bulk lookup of region locations from {@code hbase:meta} in a single RPC,
starting at
+ * {@code startKey} (region start-key boundary, inclusive) and returning at
most {@code limit}
+ * regions in start-key order.
+ * <p/>
+ * The returned list includes all replicas of each region (matching
+ * {@link #getAllRegionLocations()}), and the result is also written to the
connection's region
+ * location cache.
+ * <p/>
+ * Ordering: regions are returned in ascending region start-key order (the
natural order of
+ * {@code hbase:meta} rows for a single table). Within each region, replicas
are returned in
+ * ascending replica-id order (replica 0, then 1, then 2, ...). Split
parents are filtered out,
+ * which may cause a page to contain fewer than {@code limit} regions but
never disturbs ordering
Review Comment:
what about merged regions ?
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