@Override void perform() throws IOException { HTableDescriptor selected = selectTable(disabledTables); if (selected == null) { return; } HColumnDescriptor columnDesc = selectFamily(selected); if (columnDesc == null) { return; } Admin admin = connection.getAdmin(); int versions = RandomUtils.nextInt(10) + 3; try { TableName tableName = selected.getTableName(); LOG.info( "Altering versions of column family: " + columnDesc + " to: " + versions + " in table: " + tableName); columnDesc.setMinVersions(versions); columnDesc.setMaxVersions(versions); admin.modifyTable(tableName, selected); // assertion HTableDescriptor freshTableDesc = admin.getTableDescriptor(tableName); HColumnDescriptor freshColumnDesc = freshTableDesc.getFamily(columnDesc.getName()); Assert.assertEquals( "Column family: " + columnDesc + " was not altered", freshColumnDesc.getMaxVersions(), versions); Assert.assertEquals( "Column family: " + freshColumnDesc + " was not altered", freshColumnDesc.getMinVersions(), versions); LOG.info( "Altered versions of column family: " + columnDesc + " to: " + versions + " in table: " + tableName); disabledTables.put(tableName, freshTableDesc); } catch (Exception e) { LOG.warn("Caught exception in action: " + this.getClass()); throw e; } finally { admin.close(); } verifyTables(); }