Liuxuxin created IOTDB-5802:
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Summary: Query cannot execute after memory is
Key: IOTDB-5802
URL: https://issues.apache.org/jira/browse/IOTDB-5802
Project: Apache IoTDB
Issue Type: Bug
Reporter: Liuxuxin
Fix For: 1.1.0
Attachments: image-2023-04-22-14-48-49-583.png
Using 3C3D deployment, perform query simulation load and write simulation load.
Through the monitoring panel, it is discovered that only one of the three nodes
is executing queries. After a period of time (4 days), the node executing the
queries experiences frequent FGCs, with CPU usage consistently reaching 100%,
and both write and query operations become unresponsive; the other two nodes
have no abnormalities, but the write traffic begins to decline. After killing
the query process, observe the monitoring panel of the FGC-affected node, and
about 10 minutes later, FGCs no longer occur, CPU utilization drops below 40%,
the write throughput starts to rise. And at this time, any query from the query
load executed through the CLI will result in the error shown in the following
figure.
!image-2023-04-22-14-48-49-583.png!
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