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Michael Stack commented on HBASE-21035:
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To address more directly [~allan163]'s original
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Allan Yang commented on HBASE-21035:
[~stack], no, it is not. The reason is that I stopped RS first,
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stack commented on HBASE-21035:
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Thanks [~allan163]. Yours was not the issue over in HBASE-21425? You
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Allan Yang commented on HBASE-21035:
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I tried it Allan Yang HBASE-21425
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It's our
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stack commented on HBASE-21035:
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I tried it [~allan163] HBASE-21425
What versions did you try?
> Meta
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stack commented on HBASE-21035:
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This has been haunting me. [~elserj] had an issue he hoisted up on to the
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Allan Yang commented on HBASE-21035:
The problem mentioned in this issue need to be discussed again.
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Duo Zhang commented on HBASE-21035:
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Maybe a flag to indicate whether to persist? And reset it every
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stack commented on HBASE-21035:
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So, a filter on state changes and we only persist critical info? Worth
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Allan Yang commented on HBASE-21035:
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Then the master crashes and restarts, I think it is OK
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Duo Zhang commented on HBASE-21035:
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Theoretically there are changes, since the state has been changed
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Allan Yang commented on HBASE-21035:
Could we just do not update procedure wal if the status is not
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Duo Zhang commented on HBASE-21035:
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OK I met the same problem with you sir [~stack]. When testing
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stack commented on HBASE-21035:
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[~Apache9] Yes. Github. Am taking the opportunity to do some experiments.
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Duo Zhang commented on HBASE-21035:
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We could also help on HBCK2. What is the working flow for it?
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stack commented on HBASE-21035:
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I've been trying to make basic progress on HBCK2. I pushed up an HBCK2
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Allan Yang commented on HBASE-21035:
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So let's start helping on HBCK2?
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Sure!
> Meta
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Duo Zhang commented on HBASE-21035:
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But for InitMetaProcedure, it could happen in normal case, if
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Allan Yang commented on HBASE-21035:
Since [~stack] is running into this problem too, I still want
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stack commented on HBASE-21035:
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I put up a patch on HBASE-21191 that steals [~allan163]'s patch from
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stack commented on HBASE-21035:
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bq. Shouldn't we just trust the meta location in the ZK node?
Maybe I
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Duo Zhang commented on HBASE-21035:
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I think the most difficult thing here is that, how do we
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Allan Yang commented on HBASE-21035:
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Tricky part is finding all the meta WALs and then
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stack commented on HBASE-21035:
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.002 is a hack on top of [~allan163] 's patch. I used it doing fixup on a
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Allan Yang commented on HBASE-21035:
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Oh, I should have mentioned, I removed all master proc
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stack commented on HBASE-21035:
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Oh, I should have mentioned, I removed all master proc WALs at one stage
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stack commented on HBASE-21035:
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bq. I think Allan Yang has a valid point.
I suppose they have not
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Duo Zhang commented on HBASE-21035:
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I think [~allan163] has a valid point. For SCP, if meta is not
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stack commented on HBASE-21035:
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bq. stack, sir, I don't get it, how can SCP finish without meta online?
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Allan Yang commented on HBASE-21035:
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i.e. meta is not online even though the above server's
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Duo Zhang commented on HBASE-21035:
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I think one thing we could do is that, collect the WAL directory
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stack commented on HBASE-21035:
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Let me do what you suggest first.
> Meta Table should be able to online
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Duo Zhang commented on HBASE-21035:
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If the cluster is not in a good state and several RSes keep
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stack commented on HBASE-21035:
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I'm back.
My master is aborting after spending fours reconstructing the
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stack commented on HBASE-21035:
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Late to the party
I've been playing with removing the procedure WALs
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Duo Zhang commented on HBASE-21035:
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The goal for HBASE-20708 is to remove the unnecessary scheduling
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Allan Yang commented on HBASE-21035:
If scheduling a SCP for servers with '-splitting' is not a good
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Hadoop QA commented on HBASE-21035:
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| (x) *{color:red}-1 overall{color}* |
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Duo Zhang commented on HBASE-21035:
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What if you lose some edits of meta region and then bring the
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Allan Yang commented on HBASE-21035:
Or in short, my opinion is that, we have to try our best to
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Allan Yang commented on HBASE-21035:
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You bring meta online and mess up all the data and
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Duo Zhang commented on HBASE-21035:
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Anyway I'm -1 on doing anything automatically to try to recover
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Allan Yang commented on HBASE-21035:
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I think this should a tool in HBCK? As in the normal
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Duo Zhang commented on HBASE-21035:
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I think this should a tool in HBCK? As in the normal code path,
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