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Posted to hdfs-issues@hadoop.apache.org by "He Xiaoqiao (JIRA)" <ji...@apache.org> on 2019/07/19 09:10:00 UTC
[jira] [Commented] (HDFS-14208) A large number missingblocks
happend after failover to active.
[ https://issues.apache.org/jira/browse/HDFS-14208?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16888725#comment-16888725 ]
He Xiaoqiao commented on HDFS-14208:
------------------------------------
[~xuzq_zander] Would you like to check if HDFS-12914 could help you?
> A large number missingblocks happend after failover to active.
> --------------------------------------------------------------
>
> Key: HDFS-14208
> URL: https://issues.apache.org/jira/browse/HDFS-14208
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: hdfs
> Affects Versions: 3.0.2, 3.1.1, 3.0.3
> Reporter: xuzq
> Priority: Major
>
> When cluster is very large, Standby startup takes about 1 hours. After Standby starts and exits SafeMode, a large number of missingblocks often appeared after failover from standby to active. And the missingblocks will gradually disappear after 6 hours(block report interval).
> According the log and find only half the blocks of one DataNode be processed in SaftMode.
>
> Because the lease expired after processed some blocks of one DataNode.
> [MergeRequest|https://github.com/apache/hadoop/pull/467]
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