mirror of https://github.com/apache/druid.git
82 lines
1.9 KiB
Markdown
82 lines
1.9 KiB
Markdown
---
|
|
layout: doc_page
|
|
---
|
|
# Configuring Rules for Coordinator Nodes
|
|
Note: It is recommended that the coordinator console is used to configure rules. However, the coordinator node does have HTTP endpoints to programmatically configure rules.
|
|
|
|
Load Rules
|
|
----------
|
|
|
|
Load rules indicate how many replicants of a segment should exist in a server tier.
|
|
|
|
### Interval Load Rule
|
|
|
|
Interval load rules are of the form:
|
|
|
|
```json
|
|
{
|
|
"type" : "loadByInterval",
|
|
"interval" : "2012-01-01/2013-01-01",
|
|
"tier" : "hot"
|
|
}
|
|
```
|
|
|
|
* `type` - this should always be "loadByInterval"
|
|
* `interval` - A JSON Object representing ISO-8601 Intervals
|
|
* `tier` - the configured historical node tier
|
|
|
|
### Period Load Rule
|
|
|
|
Period load rules are of the form:
|
|
|
|
```json
|
|
{
|
|
"type" : "loadByPeriod",
|
|
"period" : "P1M",
|
|
"tier" : "hot"
|
|
}
|
|
```
|
|
|
|
* `type` - this should always be "loadByPeriod"
|
|
* `period` - A JSON Object representing ISO-8601 Periods
|
|
* `tier` - the configured historical node tier
|
|
|
|
The interval of a segment will be compared against the specified period. The rule matches if the period overlaps the interval.
|
|
|
|
Drop Rules
|
|
----------
|
|
|
|
Drop rules indicate when segments should be dropped from the cluster.
|
|
|
|
### Interval Drop Rule
|
|
|
|
Interval drop rules are of the form:
|
|
|
|
```json
|
|
{
|
|
"type" : "dropByInterval",
|
|
"interval" : "2012-01-01/2013-01-01"
|
|
}
|
|
```
|
|
|
|
* `type` - this should always be "dropByInterval"
|
|
* `interval` - A JSON Object representing ISO-8601 Periods
|
|
|
|
A segment is dropped if the interval contains the interval of the segment.
|
|
|
|
### Period Drop Rule
|
|
|
|
Period drop rules are of the form:
|
|
|
|
```json
|
|
{
|
|
"type" : "dropByPeriod",
|
|
"period" : "P1M"
|
|
}
|
|
```
|
|
|
|
* `type` - this should always be "dropByPeriod"
|
|
* `period` - A JSON Object representing ISO-8601 Periods
|
|
|
|
The interval of a segment will be compared against the specified period. The period is from some time in the past to the current time. The rule matches if the period contains the interval.
|