liupengcheng created FLINK-15848:
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Summary: Support both fixed allocator and dynamic allocator in
flink
Key: FLINK-15848
URL: https://issues.apache.org/jira/browse/FLINK-15848
Project: Flink
Issue Type: Improvement
Components: Runtime / Task
Affects Versions: 1.10.0
Reporter: liupengcheng
Currently, we removed static allocator and only support dynamic allocation in
flink1.10, however, this allocator still has some drawbacks:
# Can not allocate resources in a range, which means the resource usage is not
under control, this has very bad effect in a shared resource cluster(e.g.
Yarn), one big query or job may occupy all the resources and cause other jobs
block.
# Not support static resource allocation. That means we can hardly do
benchmark testing across engines(e.g. Spark). Also, in resource shared
cluster(e.g. Yarn) that support over-allocation, it's hard to align the
resources usage.
As discussed in FLINK-12362 , we should support both fixed allocator and
dynamic allocator(dynamically allocating in a range) in flink.
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