HBASE-22628 [Addendum] Document the custom WAL directory (hbase.wal.d…

…ir) usage

Signed-off-by: Reid Chan <reidchan@apache.org>

src/main/asciidoc/_chapters/architecture.adoc

@@ -2495,19 +2495,19 @@ NOTE: `DefaultSourceFSConfigurationProvider` supports only `xml` type files. It
 === Custom WAL Directory
 HBASE-17437 added support for specifying a WAL directory outside the HBase root directory or even in a different FileSystem since 1.3.3/2.0+. Some FileSystems (such as Amazon S3) don’t support append or consistent writes, in such scenario WAL directory needs to be configured in a different FileSystem to avoid loss of writes.
 
-Following configurations were added to accomplish this:
+Following configurations are added to accomplish this:
+
 . `hbase.wal.dir`
 +
 This defines where the root WAL directory is located, could be on a different FileSystem than the root directory. WAL directory can not be set to a subdirectory of the root directory. The default value of this is the root directory if unset.
-+
+
 . `hbase.rootdir.perms`
 +
 Configures FileSystem permissions to set on the root directory. This is '700' by default.
-+
+
 . `hbase.wal.dir.perms`
 +
 Configures FileSystem permissions to set on the WAL directory FileSystem. This is '700' by default.
-+
 
 NOTE: While migrating to custom WAL dir (outside the HBase root directory or a different FileSystem) existing WAL files must be copied manually to new WAL dir, otherwise it may lead to data loss/inconsistency as HMaster has no information about previous WAL directory.