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Re: HBase wire compatibility - HBase - [mail # dev]
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...On Thu, Feb 16, 2012 at 2:27 PM, Jacques wrote: It's less a matter of complexity, and more a matter of not wanting to expose the implementation details as part of the API. It rea...
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Author: Todd Lipcon,
2012-02-16, 22:33
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Re: HBase wire compatibility - HBase - [mail # dev]
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...Hi Devaraj, IMO, the "protocol translator" interface introduced in HDFS has been more pain than it's worth, given pluggability seems like a non-goal for us. I think it's easier to just...
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Author: Todd Lipcon,
2012-02-16, 20:48
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Re: Scan performance on a big table as combination of multiple logic tables - HBase - [mail # dev]
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...Hi Thomas, The issue with combining multiple tables into different CFs of one table is that the tables will get tied together for flush/compact operations. If the workload between them...
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Author: Todd Lipcon,
2012-02-15, 22:02
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Re: Improving HBase read performance (based on YCSB) - HBase - [mail # user]
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...Yep, definitely bound on seeks - see the 100% util, and the r/s >100. The bandwidth provided by random IO from a disk is going to be much smaller than the sequential IO you see from hdpar...
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Author: Todd Lipcon,
2012-02-15, 03:39
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Re: HBase wire compatibility - HBase - [mail # dev]
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...On Tue, Feb 14, 2012 at 5:30 PM, Gregory Chanan wrot e: es 210 +1 for 2/21 -Todd need Todd Lipcon Software Engineer, Cloudera...
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Author: Todd Lipcon,
2012-02-15, 01:57
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Re: Improving HBase read performance (based on YCSB) - HBase - [mail # user]
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...Hi Bharath, What does "iostat -dmx 5" say while you're running the benchmark? Let it print out 10 or 15 lines and copy-paste here. How do you know the disks have unused bandwidth...
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Author: Todd Lipcon,
2012-02-14, 06:03
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Re: HBase wire compatibility - HBase - [mail # dev]
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...We have a copy-paste fork of Hadoop IPC. So, it's easy enough to just apply the same style patch to our fork of it. On Mon, Feb 13, 2012 at 2:07 PM, Ted Yu wrote: ine. e: m> o...
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Author: Todd Lipcon,
2012-02-13, 22:22
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Re: loading Hadoop native libraries in HBase unit tests - HBase - [mail # dev]
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...On Mon, Feb 13, 2012 at 11:21 AM, Mikhail Bautin wrote: JVM Sort of, except the compilation process differs based on the version - eg newer versions use Maven to build instead. &...
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Author: Todd Lipcon,
2012-02-13, 19:41
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Re: loading Hadoop native libraries in HBase unit tests - HBase - [mail # dev]
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...Also keep in mind it's not just the hadoop version, but also the glibc version and host architecture. We'd have to publish built binaries for all combinations of architecture*hadoopVersion*g...
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Author: Todd Lipcon,
2012-02-13, 19:15
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Re: On 'routs' and traackr - HBase - [mail # user]
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...Regardless of Traackr or whatever mud/fud the Hypertable folks want to sling, let's not lose focus on what we're doing: building the most scalable, solid, data storage system out there. &nbs...
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Author: Todd Lipcon,
2012-02-09, 00:16
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