[ https://issues.apache.org/jira/browse/HDFS-15901?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Work on HDFS-15901 started by JiangHua Zhu. ------------------------------------------- > Solve the problem of DN repeated block reports occupying too many RPCs during > Safemode > -------------------------------------------------------------------------------------- > > Key: HDFS-15901 > URL: https://issues.apache.org/jira/browse/HDFS-15901 > Project: Hadoop HDFS > Issue Type: Improvement > Reporter: JiangHua Zhu > Assignee: JiangHua Zhu > Priority: Major > Labels: pull-request-available > Time Spent: 50m > Remaining Estimate: 0h > > When the cluster exceeds thousands of nodes, we want to restart the NameNode > service, and all DataNodes send a full Block action to the NameNode. During > SafeMode, some DataNodes may send blocks to NameNode multiple times, which > will take up too much RPC. In fact, this is unnecessary. > In this case, some block report leases will fail or time out, and in extreme > cases, the NameNode will always stay in Safe Mode. > 2021-03-14 08:16:25,873 [78438700] - INFO [Block report > processor:BlockManager@2158] - BLOCK* processReport 0xexxxxxxxx: discarded > non-initial block report from DatanodeRegistration(xxxxxxxx:port, > datanodeUuid=xxxxxxxx, infoPort=xxxxxxxx, infoSecurePort=xxxxxxxx, > ipcPort=xxxxxxxx, storageInfo=lv=xxxxxxxx;nsid=xxxxxxxx;c=0) because namenode > still in startup phase > 2021-03-14 08:16:31,521 [78444348] - INFO [Block report > processor:BlockManager@2158] - BLOCK* processReport 0xexxxxxxxx: discarded > non-initial block report from DatanodeRegistration(xxxxxxxx, > datanodeUuid=xxxxxxxx, infoPort=xxxxxxxx, infoSecurePort=xxxxxxxx, > ipcPort=xxxxxxxx, storageInfo=lv=xxxxxxxx;nsid=xxxxxxxx;c=0) because namenode > still in startup phase > 2021-03-13 18:35:38,200 [29191027] - WARN [Block report > processor:BlockReportLeaseManager@311] - BR lease 0xxxxxxxxx is not valid for > DN xxxxxxxx, because the DN is not in the pending set. > 2021-03-13 18:36:08,143 [29220970] - WARN [Block report > processor:BlockReportLeaseManager@311] - BR lease 0xxxxxxxxx is not valid for > DN xxxxxxxx, because the DN is not in the pending set. > 2021-03-13 18:36:08,143 [29220970] - WARN [Block report > processor:BlockReportLeaseManager@317] - BR lease 0xxxxxxxxx is not valid for > DN xxxxxxxx, because the lease has expired. > 2021-03-13 18:36:08,145 [29220972] - WARN [Block report > processor:BlockReportLeaseManager@317] - BR lease 0xxxxxxxxx is not valid for > DN xxxxxxxx, because the lease has expired. -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org