Hello everyone,
We are upgrading our Hadoop/HBase cluster from Hadoop 2.8.5 & HBase 2.2.5
to Hadoop 3.3.6 & HBase 2.5.7
The Hadoop upgrade worked well, but unfortunately we have problems with the
Hbase upgrade, because the master hangs on startup inside the „Starting
assignment manger“ task.
Aft
What is the jstack result for HMaster while hanging? Wait on the
namespace table online or meta table online?
Udo Offermann 于2024年4月20日周六 19:43写道：
>
> Hello everyone,
>
> We are upgrading our Hadoop/HBase cluster from Hadoop 2.8.5 & HBase 2.2.5
> to Hadoop 3.3.6 & HBase 2.5.7
>
> The Hadoop upgra
I do have the dump File from the web ui. I can sende it all or you Tell me
threads you are interessted in. Fortunately they all have meaningfull named.
张铎(Duo Zhang) schrieb am Sa., 20. Apr. 2024, 14:13:
> What is the jstack result for HMaster while hanging? Wait on the
> namespace table online
Just post it somewhere so we can check it.
Udo Offermann 于2024年4月20日周六 20:25写道：
>
> I do have the dump File from the web ui. I can sende it all or you Tell me
> threads you are interessted in. Fortunately they all have meaningfull named.
>
> 张铎(Duo Zhang) schrieb am Sa., 20. Apr. 2024, 14:13:
>
Master status for masterserver.gmd9.intern,16000,1713515965162 as of Fri
Apr 19 10:55:22 CEST 2024
Version Info:
===
HBase 2.5.7
Source code repository
git://buildbox.localdomain/home/apurtell/tmp/RM/hbase
revision=6788f98356dd70b4a7ff766ea7
OK, it was waitForMetaOnline.
Maybe the problem is that you do have some correct procedures before
upgrading, like ServerCrashProcedure, but then you delete all the
procedure wals so the ServerCrashProcedure is also gone, so meta can
never be online.
Please check the /hbase/meta-region-server zno
Thank you, I can check on Monday.
This is the upgrade of the test system and serves as training for the upgrade
of the production system. What do we need to do to prevent this problem?
We had some problems starting zookeeper after the upgrade and I had to start it
with "zookeeper.snapshot.tru
