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Re: Tool to to execute an benchmark for HBase. - HBase - [mail # user]
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...Maybe ask on Cassandra mailing list for the benchmark tool they use ?CheersOn Wed, Jan 28, 2015 at 1:23 PM, Guillermo Ortiz wrote: ...
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Author: Ted Yu,
2015-01-29, 04:29
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Re: Does 'online region merge' make regions unavailable for some time? - HBase - [mail # user]
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...Thanks everyone for the feedback. What we ended up implementing issomething that does these merges programmatically, but limits merges toregions that live on the same RS. They ta...
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Re: Does 'online region merge' make regions unavailable for some time? - HBase - [mail # user]
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...I did an experiment on a lightly populated table by merging second andthird regions which were on the same region server.hbase(main):001:0> merge_region '41e99dcbb6e92a54925a4abc825c7dce'...
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Author: Ted Yu,
2015-01-23, 01:04
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Re: Does 'online region merge' make regions unavailable for some time? - HBase - [mail # user]
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...Hi,On Wed, Jan 21, 2015 at 10:26 PM, Ted Yu wrote:Does that "move" mean local disk writes and no sending of data over thenetwork?Even if there is no network involved and it's just writ...
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Author: Otis Gospodnetic,
2015-01-22, 03:59
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Re: Does 'online region merge' make regions unavailable for some time? - HBase - [mail # user]
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...bq. doesn't that mean that a completely new region needs to be writtenYes, a new region (C in the pdf) would be created.bq. If regions are a few GB in sizeThe data files from both regions ar...
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Author: Ted Yu,
2015-01-22, 03:26
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Re: Does 'online region merge' make regions unavailable for some time? - HBase - [mail # user]
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...Thanks Enis & Ted!A few more questions inline.On Wed, Jan 21, 2015 at 9:53 PM, Enis Söztutar wrote:Hm, but how could it be so quick? Aren't regions first offlined and thenone of ...
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Author: Otis Gospodnetic,
2015-01-22, 03:09
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Re: Does 'online region merge' make regions unavailable for some time? - HBase - [mail # user]
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...Online in this context is HBase cluster being online, not individualregions. For the merge process, the regions go briefly offline similar tohow splits work. It should be on the order of sec...
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Author: Enis Söztutar,
2015-01-22, 02:54
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Re: Does 'online region merge' make regions unavailable for some time? - HBase - [mail # user]
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...Please take a look at slides 5 and 6 in this file:https://issues.apache.org/jira/secure/attachment/12561887/merge%20region.pdfIt is clear that the two regions to be merged are taken offline ...
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Author: Ted Yu,
2015-01-21, 19:06
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Re: Does 'online region merge' make regions unavailable for some time? - HBase - [mail # user]
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...Hi,Considering this is called the *online* region merge, I would assumeregions being merged never go offline during the merge and both regionsbeing merged are available for reading and writi...
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Author: Otis Gospodnetic,
2015-01-21, 01:27
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[HBASE-11861] Native MOB Compaction mechanisms. - HBase - [issue]
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...Currently, the first cut of mob will have external processes to age off old mob data (the ttl cleaner), and to compact away deleted or over written data (the sweep tool). From an opera...
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[HBASE-12808] Use Java API Compliance Checker for binary/source compatibility - HBase - [issue]
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...Following Sean Busbey's suggestion in HBASE-12556, I've spent some time playing with the Java API Compliance Checker and think it would be a great addition to /dev-support. I propose that we...
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[HBASE-8329] Limit compaction speed - HBase - [issue]
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...There is no speed or resource limit for compaction，I think we should add this feature especially when request burst....
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[HBASE-12867] Shell does not support custom replication endpoint specification - HBase - [issue]
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...On HBASE-12254 and also at https://github.com/risdenk/hbase-custom-replication-endpoint-example Kevin Risden made the following observations and suggestions regarding custom replication endp...
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[HBASE-12941] CompactionRequestor - a private interface class with no users - HBase - [issue]
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...CompactionRequestor is a 'interface audience private' class with no users in the HBase code base. Unused things should be deleted....
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[HBASE-6778] Deprecate Chore; its a thread per task when we should have one thread to do all tasks - HBase - [issue]
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...Should use something like ScheduledThreadPoolExecutor instead (Elliott said this first I think; J-D said something similar just now)....
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[HBASE-12859] Major compaction completion tracker - HBase - [issue]
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...In various scenarios it is helpful to know a guaranteed timestamp up to which all data in a table was major compacted.We can do that keeping a major compaction timestamp in META.A client the...
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[HBASE-12936] Quota support for namespace should take region merge into account - HBase - [issue]
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...HBASE-8410 added basic quota support for namespaces.However, region merge operation was not taken into account. This means, once region count limit is reached, user table cannot be split eve...
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