Andrew Purtell created HBASE-17780:
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Summary: BoundedByteBufferPool "At capacity" messages are not
actionable
Key: HBASE-17780
URL: https://issues.apache.org/jira/browse/HBASE-17780
Project: HBase
Issue Type: Bug
Affects Versions: 1.3.0
Reporter: Andrew Purtell
Assignee: Andrew Purtell
Priority: Minor
Fix For: 1.31, 2.0.0, 1.4.0
This comment in BoundedByteBufferPool talks about "At capacity ..." warnings
from this class that may appear in logs when under load:
{code}
* If a ByteBuffer is bigger than the configured threshold, we will just let
the ByteBuffer go
* rather than add it to the pool. If more ByteBuffers than the configured
maximum instances,
* we will not add the passed ByteBuffer to the pool; we will just drop it
* (we will log a WARN in this case that we are at capacity).
{code}
First, dropping buffers when the pool is full is obviously an expected and
normal condition. Second, there is nothing actionable about that warning. Might
be useful for developers, perhaps. Drop it to DEBUG.
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