Sicheng Yu created IOTDB-6279:
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Summary: Query module exceptionally shows out of memory
Key: IOTDB-6279
URL: https://issues.apache.org/jira/browse/IOTDB-6279
Project: Apache IoTDB
Issue Type: Bug
Reporter: Sicheng Yu
Attachments: car.zip
问题：
data 文件夹大小一共 55 MB 左右，启动 datanode 的 jvm 有 2G，执行查询 select count(*) from root.**
group by level=1,2 一直显示内存不足
复现步骤：
1. 执行语句 load 'path/to/dataset' onSuccess=none
2. 执行查询 select count(*) from root.** group by level=1,2
3. 显示：Msg: org.apache.iotdb.jdbc.IoTDBSQLException: 301: Query is aborted since
it requests more memory than can be allocated.
Problem:
The size of the data folder is about 55 MB, and the jvm that starts datanode is
2G, but the query select count(*) from root.** group by level=1,2 keeps showing
out of memory.
Steps to reproduce:
1. execute the statement load 'path/to/dataset' onSuccess=none
2. Execute the query select count(*) from root.** group by level=1,2
3. show: Msg: org.apache.iotdb.jdbc.IoTDBSQLException: 301: Query is aborted
since it requests more memory than can be allocated.
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