Roman Khachatryan created FLINK-35557: -----------------------------------------
Summary: MemoryManager only reserves memory per consumer type once Key: FLINK-35557 URL: https://issues.apache.org/jira/browse/FLINK-35557 Project: Flink Issue Type: Bug Components: Runtime / State Backends, Runtime / Task Affects Versions: 1.18.1, 1.19.0, 1.17.2, 1.16.3, 1.20.0 Reporter: Roman Khachatryan Assignee: Roman Khachatryan Fix For: 1.20.0, 1.19.1 # In {{MemoryManager.getSharedMemoryResourceForManagedMemory}} we [create|https://github.com/apache/flink/blob/57869c11687e0053a242c90623779c0c7336cd33/flink-runtime/src/main/java/org/apache/flink/runtime/memory/MemoryManager.java#L526] a reserve function # The function [decrements|https://github.com/apache/flink/blob/57869c11687e0053a242c90623779c0c7336cd33/flink-runtime/src/main/java/org/apache/flink/runtime/memory/UnsafeMemoryBudget.java#L61] the available Slot memory and fails if there's not enough memory # We pass it to {{SharedResources.getOrAllocateSharedResource}} # In {{SharedResources.getOrAllocateSharedResource}} , we check if the resource (memory) was already reserved by some key (e.g. {{{}state-rocks-managed-memory{}}}) # If not, we create a new one and call the reserve function # If the resource was already reserved (not null), we do NOT reserve the memory again: [https://github.com/apache/flink/blob/57869c11687e0053a242c90623779c0c7336cd33/flin[…]/main/java/org/apache/flink/runtime/memory/SharedResources.java|https://github.com/apache/flink/blob/57869c11687e0053a242c90623779c0c7336cd33/flink-runtime/src/main/java/org/apache/flink/runtime/memory/SharedResources.java#L71] So there will be only one (first) memory reservation for rocksdb for example, no matter how many state backends are created. Meaning that managed memory limits are not followed (edited) -- This message was sent by Atlassian Jira (v8.20.10#820010)