HBASE-22493 Documenting supported hadoop versions.
Signed-off-by: Sean Busbey <busbey@apache.org>
diff --git a/hbase-oss/README.md b/hbase-oss/README.md
index 3b71ee9..ec433d9 100644
--- a/hbase-oss/README.md
+++ b/hbase-oss/README.md
@@ -130,7 +130,10 @@
Any required credentials or other individal configuration should be set in
src/test/resources/auth-keys.xml, which should be ignored by source control.
-### Hadoop Versions
+## Hadoop Versions
+
+HBoss mainly depends on *org.apache.hadoop.fs.FileSystem* contract, and
+current HBoss version is compatible with Hadoop releases *2.9.2* and *3.2.0*.
There are Maven profiles defined for Hadoop 2 and Hadoop 3 major versions.
These are activated via the property `hadoop.profile`. These profiles choose
