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Posted to issues@hbase.apache.org by "Hudson (JIRA)" <ji...@apache.org> on 2018/04/09 16:31:01 UTC
[jira] [Commented] (HBASE-20242) The open sequence number will grow
if we fail to open a region after writing the max sequence id file
[ https://issues.apache.org/jira/browse/HBASE-20242?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16430826#comment-16430826 ]
Hudson commented on HBASE-20242:
--------------------------------
Results for branch branch-2
[build #590 on builds.a.o|https://builds.apache.org/job/HBase%20Nightly/job/branch-2/590/]: (x) *{color:red}-1 overall{color}*
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details (if available):
(/) {color:green}+1 general checks{color}
-- For more information [see general report|https://builds.apache.org/job/HBase%20Nightly/job/branch-2/590//General_Nightly_Build_Report/]
(/) {color:green}+1 jdk8 hadoop2 checks{color}
-- For more information [see jdk8 (hadoop2) report|https://builds.apache.org/job/HBase%20Nightly/job/branch-2/590//JDK8_Nightly_Build_Report_(Hadoop2)/]
(/) {color:green}+1 jdk8 hadoop3 checks{color}
-- For more information [see jdk8 (hadoop3) report|https://builds.apache.org/job/HBase%20Nightly/job/branch-2/590//JDK8_Nightly_Build_Report_(Hadoop3)/]
(/) {color:green}+1 source release artifact{color}
-- See build output for details.
> The open sequence number will grow if we fail to open a region after writing the max sequence id file
> -----------------------------------------------------------------------------------------------------
>
> Key: HBASE-20242
> URL: https://issues.apache.org/jira/browse/HBASE-20242
> Project: HBase
> Issue Type: Sub-task
> Reporter: Duo Zhang
> Assignee: Duo Zhang
> Priority: Major
> Fix For: 3.0.0, 2.1.0
>
> Attachments: HBASE-20242.patch
>
>
> We write the current max sequence id plus one as the new max sequence id so if we fail before report RIT to master, when assign next time the open sequence number will increase by one.
> But it is possible that we fail before writing the open region marker so there will no actual WAL with the sequence id which is the open sequence number minus one. This will cause the serial replication to be stuck.
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