@Test
public void testConnections() throws Exception {
// initial state is one connection
String json = metrics.dumpJson();
MetricsTestUtils.verifyMetricsJson(
json, MetricsTestUtils.COUNTER, MetricsConstant.OPEN_CONNECTIONS, 1);
// create two connections
HiveMetaStoreClient msc = new HiveMetaStoreClient(hiveConf);
HiveMetaStoreClient msc2 = new HiveMetaStoreClient(hiveConf);
json = metrics.dumpJson();
MetricsTestUtils.verifyMetricsJson(
json, MetricsTestUtils.COUNTER, MetricsConstant.OPEN_CONNECTIONS, 3);
// close one connection, verify still two left
msc.close();
json = metrics.dumpJson();
MetricsTestUtils.verifyMetricsJson(
json, MetricsTestUtils.COUNTER, MetricsConstant.OPEN_CONNECTIONS, 2);
// close one connection, verify still one left
msc2.close();
json = metrics.dumpJson();
MetricsTestUtils.verifyMetricsJson(
json, MetricsTestUtils.COUNTER, MetricsConstant.OPEN_CONNECTIONS, 1);
}
@Test
public void testMethodCounts() throws Exception {
driver.run("show databases");
String json = metrics.dumpJson();
// one call by init, one called here.
MetricsTestUtils.verifyMetricsJson(json, MetricsTestUtils.TIMER, "api_get_all_databases", 2);
}
@Test
public void testMetaDataCounts() throws Exception {
// 1 databases created
driver.run("create database testdb1");
// 4 tables
driver.run("create table testtbl1 (key string)");
driver.run("create table testtblpart (key string) partitioned by (partkey string)");
driver.run("use testdb1");
driver.run("create table testtbl2 (key string)");
driver.run("create table testtblpart2 (key string) partitioned by (partkey string)");
// 6 partitions
driver.run("alter table default.testtblpart add partition (partkey='a')");
driver.run("alter table default.testtblpart add partition (partkey='b')");
driver.run("alter table default.testtblpart add partition (partkey='c')");
driver.run("alter table testdb1.testtblpart2 add partition (partkey='a')");
driver.run("alter table testdb1.testtblpart2 add partition (partkey='b')");
driver.run("alter table testdb1.testtblpart2 add partition (partkey='c')");
// create and drop some additional metadata, to test drop counts.
driver.run("create database tempdb");
driver.run("use tempdb");
driver.run("create table delete_by_table (key string) partitioned by (partkey string)");
driver.run("alter table delete_by_table add partition (partkey='temp')");
driver.run("drop table delete_by_table");
driver.run("create table delete_by_part (key string) partitioned by (partkey string)");
driver.run("alter table delete_by_part add partition (partkey='temp')");
driver.run("alter table delete_by_part drop partition (partkey='temp')");
driver.run("create table delete_by_db (key string) partitioned by (partkey string)");
driver.run("alter table delete_by_db add partition (partkey='temp')");
driver.run("use default");
driver.run("drop database tempdb cascade");
// give timer thread a chance to print the metrics
CodahaleMetrics metrics = (CodahaleMetrics) MetricsFactory.getInstance();
String json = metrics.dumpJson();
MetricsTestUtils.verifyMetricsJson(
json, MetricsTestUtils.COUNTER, MetricsConstant.CREATE_TOTAL_DATABASES, 2);
MetricsTestUtils.verifyMetricsJson(
json, MetricsTestUtils.COUNTER, MetricsConstant.CREATE_TOTAL_TABLES, 7);
MetricsTestUtils.verifyMetricsJson(
json, MetricsTestUtils.COUNTER, MetricsConstant.CREATE_TOTAL_PARTITIONS, 9);
MetricsTestUtils.verifyMetricsJson(
json, MetricsTestUtils.COUNTER, MetricsConstant.DELETE_TOTAL_DATABASES, 1);
MetricsTestUtils.verifyMetricsJson(
json, MetricsTestUtils.COUNTER, MetricsConstant.DELETE_TOTAL_TABLES, 3);
MetricsTestUtils.verifyMetricsJson(
json, MetricsTestUtils.COUNTER, MetricsConstant.DELETE_TOTAL_PARTITIONS, 3);
// to test initial metadata count metrics.
hiveConf.setVar(HiveConf.ConfVars.METASTORE_RAW_STORE_IMPL, ObjectStore.class.getName());
HiveMetaStore.HMSHandler baseHandler = new HiveMetaStore.HMSHandler("test", hiveConf, false);
baseHandler.init();
baseHandler.updateMetrics();
// 1 new db + default
json = metrics.dumpJson();
MetricsTestUtils.verifyMetricsJson(
json, MetricsTestUtils.GAUGE, MetricsConstant.INIT_TOTAL_DATABASES, 2);
MetricsTestUtils.verifyMetricsJson(
json, MetricsTestUtils.GAUGE, MetricsConstant.INIT_TOTAL_TABLES, 4);
MetricsTestUtils.verifyMetricsJson(
json, MetricsTestUtils.GAUGE, MetricsConstant.INIT_TOTAL_PARTITIONS, 6);
}