HBASE-2757. Fix flaky TestFromClientSide test by forcing region assignment

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@956716 13f79535-47bb-0310-9956-ffa450edef68

CHANGES.txt

@@ -403,6 +403,7 @@ Release 0.21.0 - Unreleased
    HBASE-2760  Fix MetaScanner TableNotFoundException when scanning starting at
                the first row in a table.
    HBASE-1025  Reconstruction log playback has no bounds on memory used
+   HBASE-2757  Fix flaky TestFromClientSide test by forcing region assignment
 
   IMPROVEMENTS
    HBASE-1760  Cleanup TODOs in HTable

src/test/java/org/apache/hadoop/hbase/client/TestFromClientSide.java

@@ -3637,7 +3637,13 @@ public class TestFromClientSide {
 
     // create many regions for the table.
     TEST_UTIL.createMultiRegions(table, FAMILY);
-
+    // This count effectively waits until the regions have been
+    // fully assigned
+    TEST_UTIL.countRows(table);
+    table.getConnection().clearRegionCache();
+    assertEquals("Clearing cache should have 0 cached ", 0,
+        HConnectionManager.getCachedRegionCount(conf, TABLENAME));
+    
     // A Get is suppose to do a region lookup request
     Get g = new Get(Bytes.toBytes("aaa"));
     table.get(g);