azagrebin commented on a change in pull request #10161: [FLINK-13986][runtime] 
Clean up legacy code for FLIP-49.
URL: https://github.com/apache/flink/pull/10161#discussion_r352630980
 
 

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 File path: docs/ops/config.md
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 @@ -92,9 +92,9 @@ Configuration options to control Flink's restart behaviour 
in case of job failur
 
 {% include generated/task_manager_configuration.html %}
 
-For *batch* jobs Flink allocates a fraction of 0.7 of the free memory (total 
memory configured via taskmanager.heap.size minus memory used for network 
buffers) for its managed memory. Managed memory helps Flink to run the batch 
operators efficiently. It prevents OutOfMemoryExceptions because Flink knows 
how much memory it can use to execute operations. If Flink runs out of managed 
memory, it utilizes disk space. Using managed memory, some operations can be 
performed directly on the raw data without having to deserialize the data to 
convert it into Java objects. All in all, managed memory improves the 
robustness and speed of the system.
+For *batch* jobs Flink allocates a fraction of 0.6 of the total flink memory 
(configured via taskmanager.memory.total-flink.size) for its managed memory. 
Managed memory helps Flink to run the batch operators efficiently. It prevents 
OutOfMemoryExceptions because Flink knows how much memory it can use to execute 
operations. If Flink runs out of managed memory, it utilizes disk space. Using 
managed memory, some operations can be performed directly on the raw data 
without having to deserialize the data to convert it into Java objects. All in 
all, managed memory improves the robustness and speed of the system.
 
 Review comment:
   0.6 -> 0.4

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