HATP测试异常，获取不到AP和HTAP-Score

进行TIDB数据库的HATP测试
prop参考了pg.prop，参数为默认参数
测试命令：./hybench -t runhtap -f conf/stmt_mysql.toml -c conf/tidb.prop

测试结果异常：
2024-04-15 10:58:19 [main] INFO  HyBench:143 - Begin AP Workload
2024-04-15 10:58:19 [pool-3-thread-1] INFO  Client:263 - Begin to run :APClient, Test Duration is 1 mins
2024-04-15 10:58:19 [pool-3-thread-1] ERROR Client:358 - Waiting for load worker
java.util.concurrent.ExecutionException: java.lang.NullPointerException
	at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:?]
	at java.util.concurrent.FutureTask.get(FutureTask.java:191) ~[?:?]
	at com.hybench.workload.Client.startTask(Client.java:353) ~[HyBench-1.0-SNAPSHOT.jar:?]
	at com.hybench.HyBench$3.run(HyBench.java:156) ~[HyBench-1.0-SNAPSHOT.jar:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539) ~[?:?]
	at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) ~[?:?]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) ~[?:?]
	at java.lang.Thread.run(Thread.java:833) ~[?:?]
Caused by: java.lang.NullPointerException
	at java.lang.Class.forName0(Native Method) ~[?:?]
	at java.lang.Class.forName(Class.java:375) ~[?:?]
	at com.hybench.dbconn.ConnectionMgr.getConnection(ConnectionMgr.java:80) ~[HyBench-1.0-SNAPSHOT.jar:?]
	at com.hybench.workload.APClient.execute(APClient.java:754) ~[HyBench-1.0-SNAPSHOT.jar:?]
	at com.hybench.workload.Client$2.call(Client.java:336) ~[HyBench-1.0-SNAPSHOT.jar:?]
	at com.hybench.workload.Client$2.call(Client.java:331) ~[HyBench-1.0-SNAPSHOT.jar:?]
	at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
	... 5 more
2024-04-15 10:58:19 [pool-3-thread-1] INFO  Client:397 - Finished to execute APClient
2024-04-15 10:58:19 [Thread-0] WARN  Client:316 - Test Duration Timer was stopped in force

====================Test Summary========================
Test starts at 2024-04-15 10:59:19
Test ends at 2024-04-15 11:00:20
AP Concurrency is 1
TP Concurrency is 1
XP-IQ Concurrency is 1
XP-AT Concurrency is 1
Total amount of TP Transaction is 309
TPS is 5.15
Total amount of AP Queries is 0
QPS is NaN
Total amount of XP-IQ Queries is 0
Total amount of XP-AT Transaction is 113
XP-QPS is 0.0
XP-TPS is 1.88
Query/Transaction response time(ms) histogram : 
-----------HTAP-Summary--------------------
-----------AP-Part--------------------
QPS :        NaN 
-----------TP-Part--------------------
TPS :       5.15 
-----------XP-Part--------------------
XP-QPS :       0.00 
XP-TPS :       1.88 
-----------HTAP-Score--------------------
Geometric Mean :        NaN 
====================Thank you!========================

获取不到AP和HTAP-Score

HyBench/Hybench

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