Indhumathi27 commented on a change in pull request #4057:
URL: https://github.com/apache/carbondata/pull/4057#discussion_r547286675
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File path: docs/configuration-parameters.md
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@@ -149,6 +149,7 @@ This section provides the details of all the configurations
required for the Car
| carbon.max.pagination.lru.cache.size.in.mb | -1 | Maximum memory **(in MB)**
upto which the SDK pagination reader can cache the blocklet rows. Suggest to
configure as multiple of blocklet size. Default value of -1 means there is no
memory limit for caching. Only integer values greater than 0 are accepted. |
| carbon.partition.max.driver.lru.cache.size | -1 | Maximum memory **(in MB)**
upto which driver can cache partition metadata. Beyond this, least recently
used data will be removed from cache before loading new set of values.
| carbon.mapOrderPushDown.<db_name>_<table_name>.column| empty | If order by
column is in sort column, specify that sort column here to avoid ordering at
map task . |
+| carbon.metacache.expiration.seconds | Long.MAX_VALUE | Expiration time **(in
seconds)** for tableInfo cache in CarbonMetadata, after the time configured
since last access to the cache entry, tableInfo will be removed from cache.
Recent access will refresh the timer. Default value of Long.MAX_VALUE means the
cache will not be expired by time. **NOTE:** At the time when cache is being
expired, queries on the table may fail with NullPointerException. |
Review comment:
it is not only for CarbonMetadata, this property is also used for
tableModifiedTimeStore. Please update
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