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Posted to commits@druid.apache.org by GitBox <gi...@apache.org> on 2019/02/14 23:06:27 UTC
[GitHub] egor-ryashin commented on a change in pull request #7066: Support
assign tasks to run on different tiers of MiddleManagers
egor-ryashin commented on a change in pull request #7066: Support assign tasks to run on different tiers of MiddleManagers
URL: https://github.com/apache/incubator-druid/pull/7066#discussion_r257038117
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File path: docs/content/configuration/index.md
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@@ -1028,6 +1028,37 @@ useful if you want work evenly distributed across your middleManagers.
|`type`|`equalDistribution`.|required; must be `equalDistribution`|
|`affinityConfig`|[Affinity config](#affinity) object|null (no affinity)|
+###### Equal Distribution With Tier Spec
+
+This strategy is a variant of `Equal Distribution`, which support `workerTierSpec` field rather than `affinityConfig`. By specifying `workerTierSpec`, you can assign tasks to run on different tiers of MiddleManagers based on the tasks' **taskType** and **dataSource name**.
+
+|Property|Description|Default|
+|--------|-----------|-------|
+|`type`|`equalDistributionWithTierSpec`.|required; must be `equalDistributionWithTierSpec`|
+|`workerTierSpec`|[Worker Tier Spec](#workerTierSpec) object|null (no worker tier spec)|
+
+Example: specify tasks default to run on _tier1_ whose task
+type is "index_kafka", while dataSource "ds1" run on _tier2_.
+
+```json
+{
+ "selectStrategy": {
+ "type": "equalDistributionWithTierSpec",
+ "workerTierSpec": {
+ "strong": false,
+ "tierMap": {
+ "index_kafka": {
+ "defaultTier": "tier1",
+ "tiers": {
Review comment:
It's not actually `tiers` but more like `mappings`, `affinity`, `tierAffinity` or something like.
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