刘珍 created IOTDB-3773:
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Summary: [ query ] The first batch of results is not output
Key: IOTDB-3773
URL: https://issues.apache.org/jira/browse/IOTDB-3773
Project: Apache IoTDB
Issue Type: Bug
Components: mpp-cluster
Affects Versions: 0.14.0-SNAPSHOT
Reporter: 刘珍
Assignee: Yuan Tian
master_0704_9f79ce6 , 执行查询
grep "align by device" logs/log_all.log
2022-07-07 16:17:04,778 [20220707_081704_00000_3-166] INFO
o.a.i.d.m.p.Coordinator:115 - start executing sql: select count(s_4) from
root.** align by device
2022-07-07 16:50:14,359 [pool-61-IoTDB-RPC-Client-1] INFO
o.a.i.d.s.t.i.ClientRPCServiceImpl:593 - {color:red}*Cost: 1989760 ms*{color},
sql is select count(s_4) from root.** align by device
日志中出现查询耗时，但是后续日志还在打印此queryID的查询信息，请教田原：查询返回第一个fetch
result会打印这个日志，{color:red}*但是并没有输出查询结果，需解决。*{color}
复现流程
1. 192.168.10.62/66/68
schema_region_consensus_protocol_class=org.apache.iotdb.consensus.ratis.RatisConsensus
data_region_consensus_protocol_class=org.apache.iotdb.consensus.multileader.MultiLeaderConsensus
schema_replication_factor=3
data_replication_factor=3
query_timeout_threshold=3600000
数据：/data/liuzhen_test/master_0704_9f79ce6/datanode/data 3.8TB
1000个设备
共3,000,000序列
ip62 cli执行查询：
nohup ./sbin/start-cli.sh -h 192.168.10.62 -e "select count(s_4) from root.**
align by device;" > s4.out &
查询结果：|root.test.g_0.d_ip62_991| 676560|
|root.test.g_0.d_ip62_992| 676560|
|root.test.g_0.d_ip62_993| 676560|
|root.test.g_0.d_ip62_994| 676560|
|root.test.g_0.d_ip62_995| 676560|
|root.test.g_0.d_ip62_996| 676560|
|root.test.g_0.d_ip62_997| 676560|
|root.test.g_0.d_ip62_998| 676560|
|root.test.g_0.d_ip62_999| 676560|
+------------------------+----------+
It costs 3477.116s
Msg: 500: [INTERNAL_SERVER_ERROR(500)] Exception occurred: fetchResults failed.
Task was cancelled. （最后这个异常还是因为超时被kill）
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