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RE: Region Servers Crashing during Random Reads - HBase - [mail # user]
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...How much heap are you running on your RegionServers? 6GB of total RAM is on the low end. For high throughput applications, I wo uld recommend at least 6-8GB of heap (so 8+ GB of ...
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Author: Jonathan Gray,
2011-02-03, 20:13
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RE: doing a scan that will return random columns in a table's family - HBase - [mail # user]
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...Result is just the client-side class which wraps whatever the server return s. The ability to do this query is not really about whether Result has the methods to get at this data...
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Author: Jonathan Gray,
2011-02-03, 18:18
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RE: HBase roadmaps - HBase - [mail # dev]
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...+1 on dropping 0.20.7 ....
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Author: Jonathan Gray,
2011-01-21, 06:42
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RE: performance regression after hbase restart - HBase - [mail # user]
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...In HBase 0.90.0 there is a new "retain assignment" configuration parameter that makes it so your cluster keeps the same region assignment between full cluster restarts. It ...
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Author: Jonathan Gray,
2011-01-21, 03:37
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RE: hbase 0.20.6 - HBaseClusterTestCase, DU, cygwin, IntelliJ - arg! - HBase - [mail # user]
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...Sounds like a bug. Want to file a JIRA with as much detail as you can incl uding log snippets? arg! - s by t it per ocess to port ? arg! t is ot found, for ....
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Author: Jonathan Gray,
2011-01-21, 00:56
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RE: stargate 20.6 with hbase 20.2 - HBase - [mail # user]
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...The basic steps are the same, but to go from 0.20 to 0.90 there is no actua l "migrate" step. On the HBase side, all that is required is shutting down the old version and coming ...
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Author: Jonathan Gray,
2011-01-20, 19:19
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RE: Online modify table schema (e.g. AddColumnFamily, DeleteColumnFamily, etc) and other features - HBase - [mail # dev]
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...le able This is in the plans and exactly as you describe. We are planning to move table schema information into ZooKeeper and then support online schema modi fications. &nb...
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Author: Jonathan Gray,
2011-01-20, 18:10
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RE: stargate 20.6 with hbase 20.2 - HBase - [mail # user]
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...It's strongly recommended that you upgrade to HBase 0.20.6 (at least) if no t HBase 0.90.0. There are several critical bug fixes in the releases betwe en 0.20.2 and 0.20.6 besides star...
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Author: Jonathan Gray,
2011-01-20, 18:07
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RE: Scan (Start Row, End Row) vs Scan (Row) - HBase - [mail # user]
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...Yes. t xFilter ter will fail and arts m...
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Author: Jonathan Gray,
2011-01-20, 16:43
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RE: Question about HBase Delete - HBase - [mail # dev]
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...HBase (and BigTable) use delete markers (or tombstones). As you say, once written, all data is immutable. These markers look very similar to normal Put operations but the H...
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Author: Jonathan Gray,
2011-01-20, 16:36
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