FrankChen021 commented on a change in pull request #11307:
URL: https://github.com/apache/druid/pull/11307#discussion_r748805400
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File path: docs/configuration/index.md
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@@ -1403,6 +1403,7 @@ Additional peon configs include:
|`druid.indexer.task.restoreTasksOnRestart`|If true, MiddleManagers will
attempt to stop tasks gracefully on shutdown and restore them on restart.|false|
|`druid.indexer.task.ignoreTimestampSpecForDruidInputSource`|If true, tasks
using the [Druid input source](../ingestion/native-batch.md#druid-input-source)
will ignore the provided timestampSpec, and will use the `__time` column of the
input datasource. This option is provided for compatibility with ingestion
specs written before Druid 0.22.0.|false|
|`druid.indexer.server.maxChatRequests`|Maximum number of concurrent requests
served by a task's chat handler. Set to 0 to disable limiting.|0|
+|`druid.indexer.task.enableInMemoryBitmap`| If true, stream ingestion will
enable in memory bitmap for applicable dimensions when data is still in memory
during real time writes before disk persistence triggers. Queries can leverage
the bitmaps to avoid a full scan to speed up for this stage of data. |false|
Review comment:
From implementation we can see that bitmap index are applied to
dimensions with type of String and __time column, it's better to put this
detail in the doc.
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