carp84 commented on a change in pull request #10820:
[FLINK-15512][statebackend] Refactor the mechanism to calculate the cache
capacity shared among RocksDB instance(s)
URL: https://github.com/apache/flink/pull/10820#discussion_r365565010
##########
File path:
flink-state-backends/flink-statebackend-rocksdb/src/main/java/org/apache/flink/contrib/streaming/state/RocksDBOperationUtils.java
##########
@@ -213,4 +211,49 @@ public static void addColumnFamilyOptionsToCloseLater(
throw new IOException("Failed to acquire shared cache
resource for RocksDB", e);
}
}
+
+ @VisibleForTesting
+ static RocksDBSharedResources allocateRocksDBSharedResources(long
memorySize, double writeBufferRatio, double highPriorityPoolRatio) {
+ long calculatedCacheCapacity =
calculateActualCacheCapacity(memorySize, writeBufferRatio);
+ final Cache cache = createCache(calculatedCacheCapacity,
highPriorityPoolRatio);
+ long writeBufferManagerCapacity =
calculateWriteBufferManagerCapacity(memorySize, writeBufferRatio);
+ final WriteBufferManager wbm = new
WriteBufferManager(writeBufferManagerCapacity, cache);
+ return new RocksDBSharedResources(cache, wbm);
+ }
+
+ /**
+ * Calculate the actual calculated memory size of cache, which would be
shared among rocksDB instance(s).
Review comment:
Minor: the actual calculated memory size -> the actual memory size
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