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Posted to issues@hbase.apache.org by "Wellington Chevreuil (Jira)" <ji...@apache.org> on 2021/06/02 15:21:00 UTC
[jira] [Updated] (HBASE-25331) [HBOSS] TreeLockManager should log
warnings about lock contention periodically
[ https://issues.apache.org/jira/browse/HBASE-25331?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Wellington Chevreuil updated HBASE-25331:
-----------------------------------------
Labels: hbase-filesystem (was: )
> [HBOSS] TreeLockManager should log warnings about lock contention periodically
> ------------------------------------------------------------------------------
>
> Key: HBASE-25331
> URL: https://issues.apache.org/jira/browse/HBASE-25331
> Project: HBase
> Issue Type: Improvement
> Affects Versions: hbase-filesystem-1.0.0-alpha1
> Reporter: Wellington Chevreuil
> Assignee: Wellington Chevreuil
> Priority: Major
> Labels: hbase-filesystem
> Fix For: hbase-filesystem-1.0.0-alpha2
>
>
> While performing some internal tests with hboss, [~psomogyi] noticed that *TreeLockManager* class logs too frequently when it is waiting on parent write lock.
> {noformat}
> 2020-10-26 17:35:41,719 WARN org.apache.hadoop.hbase.oss.sync.TreeLockManager: Blocked waiting for some parent write lock, waiting: /s3a/hbase/hbase-dl/db1/hbase/data/default/test1/.tabledesc/.tableinfo.0000000001
> 2020-10-26 17:35:41,720 WARN org.apache.hadoop.hbase.oss.sync.TreeLockManager: Blocked waiting for some parent write lock, waiting: /s3a/hbase/hbase-dl/db1/hbase/data/default/test1/.tabledesc/.tableinfo.0000000001
> 2020-10-26 17:35:41,721 WARN org.apache.hadoop.hbase.oss.sync.TreeLockManager: Blocked waiting for some parent write lock, waiting: /s3a/hbase/hbase-dl/db1/hbase/data/default/test1/.tabledesc/.tableinfo.0000000001
> 2020-10-26 17:35:41,723 WARN org.apache.hadoop.hbase.oss.sync.TreeLockManager: Blocked waiting for some parent write lock, waiting: /s3a/hbase/hbase-dl/db1/hbase/data/default/test1/.tabledesc/.tableinfo.0000000001
> 2020-10-26 17:35:41,724 WARN org.apache.hadoop.hbase.oss.sync.TreeLockManager: Blocked waiting for some parent write lock, waiting: /s3a/hbase/hbase-dl/db1/hbase/data/default/test1/.tabledesc/.tableinfo.0000000001
> 2020-10-26 17:35:41,725 WARN org.apache.hadoop.hbase.oss.sync.TreeLockManager: Blocked waiting for some parent write lock, waiting: /s3a/hbase/hbase-dl/db1/hbase/data/default/test1/.tabledesc/.tableinfo.0000000001
> 2020-10-26 17:35:41,726 WARN org.apache.hadoop.hbase.oss.sync.TreeLockManager: Blocked waiting for some parent write lock, waiting: /s3a/hbase/hbase-dl/db1/hbase/data/default/test1/.tabledesc/.tableinfo.0000000001
> 2020-10-26 17:35:41,728 WARN org.apache.hadoop.hbase.oss.sync.TreeLockManager: Blocked waiting for some parent write lock, waiting: /s3a/hbase/hbase-dl/db1/hbase/data/default/test1/.tabledesc/.tableinfo.0000000001
> 2020-10-26 17:35:41,729 WARN org.apache.hadoop.hbase.oss.sync.TreeLockManager: Blocked waiting for some parent write lock, waiting: /s3a/hbase/hbase-dl/db1/hbase/data/default/test1/.tabledesc/.tableinfo.0000000001
> 2020-10-26 17:35:41,730 WARN org.apache.hadoop.hbase.oss.sync.TreeLockManager: Blocked waiting for some parent write lock, waiting: /s3a/hbase/hbase-dl/db1/hbase/data/default/test1/.tabledesc/.tableinfo.0000000001 {noformat}
> In 4 seconds on a single RegionServer this WARN was logged 1767 times.
> This modifies current logging logic, to calculate the time spent trying to acquire locks on individual nodes, then warning only given a configurable threshold is exhausted.
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