[jira] [Updated] (HDFS-11090) Leave safemode immediately if all blocks have reported in
[ https://issues.apache.org/jira/browse/HDFS-11090?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Junping Du updated HDFS-11090: -- Target Version/s: (was: 2.8.0) > Leave safemode immediately if all blocks have reported in > - > > Key: HDFS-11090 > URL: https://issues.apache.org/jira/browse/HDFS-11090 > Project: Hadoop HDFS > Issue Type: Improvement > Components: namenode >Affects Versions: 2.7.3 >Reporter: Andrew Wang >Assignee: Yiqun Lin > Attachments: HDFS-11090.001.patch > > > Startup safemode is triggered by two thresholds: % blocks reported in, and > min # datanodes. It's extended by an interval (default 30s) until these two > thresholds are met. > Safemode extension is helpful when the cluster has data, and the default % > blocks threshold (0.99) is used. It gives DNs a little extra time to report > in and thus avoid unnecessary replication work. > However, we can leave startup safemode early if 100% of blocks have reported > in. > Note that operators sometimes change the % blocks threshold to > 1 to never > automatically leave safemode. We should maintain this behavior. -- This message was sent by Atlassian JIRA (v6.3.4#6332) - To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
[jira] [Updated] (HDFS-11090) Leave safemode immediately if all blocks have reported in
[ https://issues.apache.org/jira/browse/HDFS-11090?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Andrew Wang updated HDFS-11090: --- Status: Open (was: Patch Available) > Leave safemode immediately if all blocks have reported in > - > > Key: HDFS-11090 > URL: https://issues.apache.org/jira/browse/HDFS-11090 > Project: Hadoop HDFS > Issue Type: Improvement > Components: namenode >Affects Versions: 2.7.3 >Reporter: Andrew Wang >Assignee: Yiqun Lin > Attachments: HDFS-11090.001.patch > > > Startup safemode is triggered by two thresholds: % blocks reported in, and > min # datanodes. It's extended by an interval (default 30s) until these two > thresholds are met. > Safemode extension is helpful when the cluster has data, and the default % > blocks threshold (0.99) is used. It gives DNs a little extra time to report > in and thus avoid unnecessary replication work. > However, we can leave startup safemode early if 100% of blocks have reported > in. > Note that operators sometimes change the % blocks threshold to > 1 to never > automatically leave safemode. We should maintain this behavior. -- This message was sent by Atlassian JIRA (v6.3.4#6332) - To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
[jira] [Updated] (HDFS-11090) Leave safemode immediately if all blocks have reported in
[ https://issues.apache.org/jira/browse/HDFS-11090?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Yiqun Lin updated HDFS-11090: - Attachment: HDFS-11090.001.patch > Leave safemode immediately if all blocks have reported in > - > > Key: HDFS-11090 > URL: https://issues.apache.org/jira/browse/HDFS-11090 > Project: Hadoop HDFS > Issue Type: Improvement > Components: namenode >Affects Versions: 2.7.3 >Reporter: Andrew Wang >Assignee: Yiqun Lin > Attachments: HDFS-11090.001.patch > > > Startup safemode is triggered by two thresholds: % blocks reported in, and > min # datanodes. It's extended by an interval (default 30s) until these two > thresholds are met. > Safemode extension is helpful when the cluster has data, and the default % > blocks threshold (0.99) is used. It gives DNs a little extra time to report > in and thus avoid unnecessary replication work. > However, we can leave startup safemode early if 100% of blocks have reported > in. > Note that operators sometimes change the % blocks threshold to > 1 to never > automatically leave safemode. We should maintain this behavior. -- This message was sent by Atlassian JIRA (v6.3.4#6332) - To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
[jira] [Updated] (HDFS-11090) Leave safemode immediately if all blocks have reported in
[ https://issues.apache.org/jira/browse/HDFS-11090?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Yiqun Lin updated HDFS-11090: - Status: Patch Available (was: Open) > Leave safemode immediately if all blocks have reported in > - > > Key: HDFS-11090 > URL: https://issues.apache.org/jira/browse/HDFS-11090 > Project: Hadoop HDFS > Issue Type: Improvement > Components: namenode >Affects Versions: 2.7.3 >Reporter: Andrew Wang >Assignee: Yiqun Lin > > Startup safemode is triggered by two thresholds: % blocks reported in, and > min # datanodes. It's extended by an interval (default 30s) until these two > thresholds are met. > Safemode extension is helpful when the cluster has data, and the default % > blocks threshold (0.99) is used. It gives DNs a little extra time to report > in and thus avoid unnecessary replication work. > However, we can leave startup safemode early if 100% of blocks have reported > in. > Note that operators sometimes change the % blocks threshold to > 1 to never > automatically leave safemode. We should maintain this behavior. -- This message was sent by Atlassian JIRA (v6.3.4#6332) - To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
