hbase Inconsistent Regions问题

1. hbase版本

2.3.3

2. 问题

界面hbck页面出现如下问题：

文字描述如下：

Unknown Servers
The below are servers mentioned in the hbase:meta table that are no longer ‘live’ or known ‘dead’. The server likely belongs to an older cluster epoch since replaced by a new instance because of a restart/crash. To clear ‘Unknown Servers’, run ‘hbck2 scheduleRecoveries UNKNOWN_SERVERNAME’. This will schedule a ServerCrashProcedure. It will clear out ‘Unknown Server’ references and schedule reassigns of any Regions that were associated with this host. But first!, be sure the referenced Region is not currently stuck looping trying to OPEN. Does it show as a Region-In-Transition on the Master home page? Is it mentioned in the ‘Procedures and Locks’ Procedures list? If so, perhaps it stuck in a loop trying to OPEN but unable to because of a missing reference or file. Read the Master log looking for the most recent mentions of the associated Region name. Try and address any such complaint first. If successful, a side-effect should be the clean up of the ‘Unknown Servers’ list. It may take a while. OPENs are retried forever but the interval between retries grows. The ‘Unknown Server’ may be cleared because it is just the last RegionServer the Region was successfully opened on; on the next open, the ‘Unknown Server’ will be purged.

Inconsistent Regions
There are three cases: 1. Master thought this region opened, but no regionserver reported it (Fix: use assign command); 2. Master thought this region opened on Server1, but regionserver reported Server2 (Fix: need to check the server still exists. If not, schedule ServerCrashProcedure for it. If exists, restart Server2 and Server1): 3. More than one regionserver reports opened this region (Fix: restart the RegionServers). Note: the reported online regionservers may be not be up-to-date when there are regions in transition.

3. 解决方法

重启上述出现问题的regionserver。

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hbase Inconsistent Regions问题

1. hbase版本

2. 问题

3. 解决方法

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