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Lars Hofhansl commented on HBASE-13082:
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[~ram_krish] Above sounded a bit more whiny than
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ramkrishna.s.vasudevan commented on HBASE-13082:
HBASE-20704 though I started seeing it
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ramkrishna.s.vasudevan commented on HBASE-13082:
[~lhofhansl]
I agree to your point that
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Andrew Purtell commented on HBASE-13082:
bq. I don't like reference counting... In this case you
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Lars Hofhansl commented on HBASE-13082:
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Interestingly we just upgraded one of our clusters to
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Lars Hofhansl commented on HBASE-13082:
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[~ramkrishna.s.vasude...@gmail.com] [~anoop.hbase], Yep,
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ramkrishna.s.vasudevan commented on HBASE-13082:
[~lhofhansl]
In the current trunk and
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Anoop Sam John commented on HBASE-13082:
So this means when there are parallel scanners, the
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Lars Hofhansl commented on HBASE-13082:
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So I found a deceptively simple way of (1) avoiding the
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Hudson commented on HBASE-13082:
SUCCESS: Integrated in HBase-1.3-IT #460 (See
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Hudson commented on HBASE-13082:
SUCCESS: Integrated in HBase-1.3 #513 (See
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Hudson commented on HBASE-13082:
SUCCESS: Integrated in HBase-1.3 #509 (See
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Hudson commented on HBASE-13082:
SUCCESS: Integrated in HBase-1.3-IT #454 (See
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Hudson commented on HBASE-13082:
FAILURE: Integrated in HBase-1.3 #505 (See
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Hudson commented on HBASE-13082:
SUCCESS: Integrated in HBase-1.3-IT #451 (See
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Hudson commented on HBASE-13082:
FAILURE: Integrated in HBase-Trunk_matrix #645 (See
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ramkrishna.s.vasudevan commented on HBASE-13082:
Oops. I need to prepare a patch for 1.3
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Anoop Sam John commented on HBASE-13082:
Can we have it in 1.3 also?
> Coarsen StoreScanner
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stack commented on HBASE-13082:
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Wahoo.
+1 on 1.3. Probably too late for 1.2.
> Coarsen StoreScanner
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Hudson commented on HBASE-13082:
FAILURE: Integrated in HBase-Trunk_matrix #530 (See
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Hadoop QA commented on HBASE-13082:
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{color:red}-1 overall{color}. Here are the results of testing the
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Hadoop QA commented on HBASE-13082:
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{color:red}-1 overall{color}. Here are the results of testing the
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Anoop Sam John commented on HBASE-13082:
sortCompactedfiles This is already been called on new
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ramkrishna.s.vasudevan commented on HBASE-13082:
bq.sortCompactedfiles This is already
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ramkrishna.s.vasudevan commented on HBASE-13082:
Changed the way isReferencedInREads is
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ramkrishna.s.vasudevan commented on HBASE-13082:
Will commit this patch shortly.
>
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stack commented on HBASE-13082:
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+1 Thanks [~ram_krish]
StoreFileManager and StoreFileInfo all needs
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Hadoop QA commented on HBASE-13082:
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{color:green}+1 overall{color}. Here are the results of testing
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ramkrishna.s.vasudevan commented on HBASE-13082:
bq.Could also have the method internally
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ramkrishna.s.vasudevan commented on HBASE-13082:
bq. Do it up here where compactedfiles
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ramkrishna.s.vasudevan commented on HBASE-13082:
bq.Do you have to have 'Compacted' in
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stack commented on HBASE-13082:
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Nice explanation on compactedfiles
bq.// Sorting may not be really
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stack commented on HBASE-13082:
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bq. The TTLCleaner works every 5 mins for the secondary region replica. So
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stack commented on HBASE-13082:
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bq. Oops. Latest comments. I will check them too. Thanks.
Sorry. Done now
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ramkrishna.s.vasudevan commented on HBASE-13082:
Oops. Latest comments. I will check them
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stack commented on HBASE-13082:
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You think we need to do checkFlushed(); on each seek call? Would doing
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stack commented on HBASE-13082:
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Looking at v14:
Yeah, talk about how stuff is different now in the
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ramkrishna.s.vasudevan commented on HBASE-13082:
Thanks for the reviews Stack.
bq. Need
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stack commented on HBASE-13082:
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bq. Will update the comment and say that 'these files are not included in
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ramkrishna.s.vasudevan commented on HBASE-13082:
Did some JMH microbenchmark test by
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stack commented on HBASE-13082:
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bq. // Start the CompactedHFileCleaner here
This is new?
Where
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stack commented on HBASE-13082:
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An order of magnitude improvement * 2. Not bad [~ramkrishna]. Thanks for
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ramkrishna.s.vasudevan commented on HBASE-13082:
Ping for reviews. !!!
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ramkrishna.s.vasudevan commented on HBASE-13082:
Withpatch
===
Avg: 324secs
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ramkrishna.s.vasudevan commented on HBASE-13082:
Ping for reviews !! Will do some more
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Hadoop QA commented on HBASE-13082:
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{color:green}+1 overall{color}. Here are the results of testing
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Hadoop QA commented on HBASE-13082:
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{color:red}-1 overall{color}. Here are the results of testing the
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Hadoop QA commented on HBASE-13082:
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{color:red}-1 overall{color}. Here are the results of testing the
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ramkrishna.s.vasudevan commented on HBASE-13082:
I just saw this
{code}
if
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Enis Soztutar commented on HBASE-13082:
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bq. In one of the test case - so may this is what I was
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ramkrishna.s.vasudevan commented on HBASE-13082:
bq.The locks are not the problem, it's
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Lars Hofhansl commented on HBASE-13082:
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bq. The volatile check is still a memory fence barrier
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Enis Soztutar commented on HBASE-13082:
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The volatile check is still a memory fence barrier similar
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Enis Soztutar commented on HBASE-13082:
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bq. HDFS does not allow to rename if there are any active
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ramkrishna.s.vasudevan commented on HBASE-13082:
bq. The way region replicas work is that
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ramkrishna.s.vasudevan commented on HBASE-13082:
I think [~enis] your point makes sense.
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Hadoop QA commented on HBASE-13082:
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{color:red}-1 overall{color}. Here are the results of testing the
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Hadoop QA commented on HBASE-13082:
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{color:red}-1 overall{color}. Here are the results of testing the
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ramkrishna.s.vasudevan commented on HBASE-13082:
After doing the code changes and testing
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ramkrishna.s.vasudevan commented on HBASE-13082:
One interesting part while doing this is
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ramkrishna.s.vasudevan commented on HBASE-13082:
Regarding the memstore files getting
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ramkrishna.s.vasudevan commented on HBASE-13082:
bq.This status is in reader? It suits
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Anoop Sam John commented on HBASE-13082:
So we wont reset the heap of the files during the scan.
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Anoop Sam John commented on HBASE-13082:
Good doc explaining the change.
bq. Along with the ref
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ramkrishna.s.vasudevan commented on HBASE-13082:
bq.What about flush? Once the flush is
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stack commented on HBASE-13082:
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The one pager is great ([~lhofhansl]!). Nice summary of the issue up top.
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stack commented on HBASE-13082:
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bq. When we mark a file as compacted the confusion can be like whether
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ramkrishna.s.vasudevan commented on HBASE-13082:
But again if handling flushes is a
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ramkrishna.s.vasudevan commented on HBASE-13082:
bq.So we wont change the store file's
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Anoop Sam John commented on HBASE-13082:
Not getting cells from bulk loaded files which is loaded
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Duo Zhang commented on HBASE-13082:
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I mean maybe we could have a fast path without locking for normal
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ramkrishna.s.vasudevan commented on HBASE-13082:
bq.I mean maybe we could have a fast
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ramkrishna.s.vasudevan commented on HBASE-13082:
We can rename the states to ACTIVE and
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Duo Zhang commented on HBASE-13082:
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{quote}
On flush, what if we let all Scans complete before letting
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ramkrishna.s.vasudevan commented on HBASE-13082:
bq.Because during flush the reads can
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Anoop Sam John commented on HBASE-13082:
bq.But one thing may be to check is that if we open but
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ramkrishna.s.vasudevan commented on HBASE-13082:
Next week beginning I will upload a one
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ramkrishna.s.vasudevan commented on HBASE-13082:
https://reviews.apache.org/r/39393/- RB
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Hadoop QA commented on HBASE-13082:
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{color:red}-1 overall{color}. Here are the results of testing the
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stack commented on HBASE-13082:
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This is an important fix. I started to look at the rb and then got lost on
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Hadoop QA commented on HBASE-13082:
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{color:red}-1 overall{color}. Here are the results of testing the
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Hadoop QA commented on HBASE-13082:
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{color:red}-1 overall{color}. Here are the results of testing the
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ramkrishna.s.vasudevan commented on HBASE-13082:
bq.So, bulk load won't show mid-scan...
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stack commented on HBASE-13082:
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bq. New files added by bulk load during an on going scan won't be included
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stack commented on HBASE-13082:
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bq. But in case of bulk loaded files, currently in between a scan if a new
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ramkrishna.s.vasudevan commented on HBASE-13082:
bq.I'm a little late to the party but
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Lars Hofhansl commented on HBASE-13082:
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Feel free [~ram_krish]. I just happened to look at the
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ramkrishna.s.vasudevan commented on HBASE-13082:
Thanks Stack. Better to go ahead with
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ramkrishna.s.vasudevan commented on HBASE-13082:
Any one planning to work on this. I am
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stack commented on HBASE-13082:
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Please bring it home [~ram_krish] Its an important one.
> Coarsen
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Anoop Sam John commented on HBASE-13082:
[~larsh] are you working on the idea of
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Lars Hofhansl commented on HBASE-13082:
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I am backed up at the moment, would love
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Jonathan Lawlor commented on HBASE-13082:
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I'm a little late to the party but
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Lars Hofhansl commented on HBASE-13082:
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Correct. No more locking other than to fix
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Anoop Sam John commented on HBASE-13082:
If scanners can continue read from the
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stack commented on HBASE-13082:
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I ran this patch on my rig and see ~6-7% more throughput
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Lars Hofhansl commented on HBASE-13082:
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Thanks [~stack]. That's with 1000 bytes
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stack commented on HBASE-13082:
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Sorry.. average size about 180k rows. So, yeah, probably
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stack commented on HBASE-13082:
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[~lhofhansl] 10 columns zipfian sized from 0 to 8k.
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Lars Hofhansl commented on HBASE-13082:
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Exactly.
Logically it's relatively simple.
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