pkuwm opened a new issue #1125:
URL: https://github.com/apache/helix/issues/1125
Maintenance history is json serialized to be stored in znode. It doesn't
seem necessary to serialize to json? Because: it adds backslashes to the json
string as it is double json serialized in response.
```
{
"maintenanceHistory" : [
"{\"DATE\":\"2020-06-06-12:03:24\",\"TIMESTAMP\":\"1591445004332\",\"OPERATION_TYPE\":\"ENTER\",\"REASON\":\"Restart
Offline Instances is restarting hosts:
```
Code:
` maintenanceHistoryList.add(new
ObjectMapper().writeValueAsString(maintenanceEntry));
`
Shall we just write the map string to znode, which would make it easier to
read in json response/web ui for maintenance history?
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