yihua commented on code in PR #5746:
URL: https://github.com/apache/hudi/pull/5746#discussion_r929358584
##########
hudi-common/src/main/java/org/apache/hudi/common/config/HoodieMetadataConfig.java:
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@@ -187,6 +187,26 @@ public final class HoodieMetadataConfig extends
HoodieConfig {
.sinceVersion("0.11.0")
.withDocumentation("Comma-separated list of columns for which column
stats index will be built. If not set, all columns will be indexed");
+ public static final String COLUMN_STATS_INDEX_PROCESSING_MODE_IN_MEMORY =
"in-memory";
+ public static final String COLUMN_STATS_INDEX_PROCESSING_MODE_ENGINE =
"engine";
+
+ public static final ConfigProperty<String>
COLUMN_STATS_INDEX_PROCESSING_MODE_OVERRIDE = ConfigProperty
+ .key(METADATA_PREFIX + ".index.column.stats.processing.mode.override")
+ .noDefaultValue()
+ .withValidValues(COLUMN_STATS_INDEX_PROCESSING_MODE_IN_MEMORY,
COLUMN_STATS_INDEX_PROCESSING_MODE_ENGINE)
+ .sinceVersion("0.12.0")
+ .withDocumentation("By default Column Stats Index is automatically
determining whether it should be read and processed either"
+ + "'in-memory' (w/in executing process) or using Spark (on a
cluster), based on some factors like the size of the Index "
+ + "and how many columns are read. This config allows to override
this behavior.");
+
+ public static final ConfigProperty<Integer>
COLUMN_STATS_INDEX_IN_MEMORY_PROJECTION_THRESHOLD = ConfigProperty
+ .key(METADATA_PREFIX +
".index.column.stats.inMemory.projection.threshold")
+ .defaultValue(100000)
Review Comment:
How fast is it for in-memory?
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