hbase-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Anastasia Braginsky (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-17662) Disable in-memory flush when replaying from WAL
Date Mon, 20 Feb 2017 08:17:44 GMT

     [ https://issues.apache.org/jira/browse/HBASE-17662?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Anastasia Braginsky updated HBASE-17662:
----------------------------------------
    Summary: Disable in-memory flush when replaying from WAL  (was: Disable in-memory flush
when eplaying from WAL)

> Disable in-memory flush when replaying from WAL
> -----------------------------------------------
>
>                 Key: HBASE-17662
>                 URL: https://issues.apache.org/jira/browse/HBASE-17662
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Anastasia Braginsky
>         Attachments: HBASE-17662-V02.patch
>
>
> When replaying the edits from WAL, the region's updateLock is not taken, because a single
threaded action is assumed. However, the thread-safeness of the in-memory flush of CompactingMemStore
is based on taking the region's updateLock. 
> The in-memory flush can be skipped in the replay time (anyway everything is flushed to
disk just after the replay). Therefore it is acceptable to just skip the in-memory flush action
while the updates come as part of replay from WAL.



--
This message was sent by Atlassian JIRA
(v6.3.15#6346)

Mime
View raw message