[HBASE-26190] High rate logging of BucketAllocatorException: Allocation too big

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.4.5
• Fix Version/s: 2.5.0, 3.0.0-alpha-2, 2.4.8
• Component/s: BucketCache, Operability
• Hadoop Flags: Reviewed
• Assignee: Kulwant Singh
• Reporter: Andrew Kyle Purtell
• Created: 11/Aug/21 23:46
• Updated: 12/Nov/21 09:13
• Resolved: 27/Oct/21 15:17

Description

These log lines may be printed at high frequency when using a schema that creates large blocks and the bucket cache is enabled. It makes sense to warn about this initially, but the very high rate of warnings when the use case is legit and this is expected does not. Print this once, then not again; or, rate-limit this message to be printed at a more reasonable rate, like once per minute.

2021-08-11 23:42:10,902 WARN  [main-BucketCacheWriter-0]
bucket.BucketCache: Failed allocation for 4842189251414b8a9212f6831462e415_218610843;
org.apache.hadoop.hbase.io.hfile.bucket.BucketAllocatorException:
Allocation too big size=1049337;
adjust BucketCache sizes hbase.bucketcache.bucket.sizes to accomodate
if size seems reasonable and you want it cached.

Also, it might be better to log this at INFO given the caveat "if size seems reasonable and you want it cached". Reads like an informational message.

Issue Links

• relates to: HBASE-26452 Table name and Column Family Name not always initialized in the HFileContext
• links to: GitHub Pull Request #3648
• links to: GitHub Pull Request #3752
• links to: GitHub Pull Request #3792