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ساخن ++18 - msg#12481

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Re: 0.90 latency performance, cdh3b4

FS latency shouldn't matter with your 99.9% cache hit rate as reported. On Wed, Apr 20, 2011 at 12:55 PM, Dmitriy Lyubimov <dlieu.7@xxxxxxxxx>wrote: > Yes -- I already looked thru 'regionserver' metrics some time ago in > hbase book. And i am not sure there's a 'inner ttlb' metric. > > There are fs latency metrics there but nothing for the respons times. > fs latency is essentially hdfs latency AFAICT and that would not be > relevant to what i am asking for (for as long as we are hitting LRU > block cache anyway). we are not hitting fs. > > Unless there are more metrics than listed in the Hbase Book? > > > On Wed, Apr 20, 2011 at 12:46 PM, Stack <stack@xxxxxxxxxx> wrote: > > Enable rpc logging. Will show in your ganglia. See metrics article > > on hbase home page. > > > > On Wed, Apr 20, 2011 at 12:44 PM, Dmitriy Lyubimov <dlieu.7@xxxxxxxxx> > wrote: > >> Is there any way to log 'inner' TTLB times the region server incurs for > reads? > >> > >> > >> On Wed, Apr 20, 2011 at 12:43 PM, Dmitriy Lyubimov <dlieu.7@xxxxxxxxx> > wrote: > >>> i just enabled debug logging for o.a.h.hbase logger in that particular > >>> region server... so far not much except for LRUBlock cache spitting > >>> metrics .. > >>> > >>> 2011-04-20 12:28:48,375 DEBUG > >>> org.apache.hadoop.hbase.io.hfile.LruBlockCache: LRU Stats: total=8.26 > >>> MB, free=190.08 MB, max=198.34 MB, blocks=112, accesses=55732209, > >>> hits=55732083, hitRatio=99.99%%, cachingAccesses=55732195, > >>> cachingHits=55732083, cachingHitsRatio=99.99%%, evictions=0, > >>> evicted=0, evictedPerRun=NaN > >>> 2011-04-20 12:33:48,375 DEBUG > >>> org.apache.hadoop.hbase.io.hfile.LruBlockCache: LRU Stats: total=8.26 > >>> MB, free=190.08 MB, max=198.34 MB, blocks=112, accesses=56703200, > >>> hits=56703074, hitRatio=99.99%%, cachingAccesses=56703186, > >>> cachingHits=56703074, cachingHitsRatio=99.99%%, evictions=0, > >>> evicted=0, evictedPerRun=NaN > >>> 2011-04-20 12:38:48,375 DEBUG > >>> org.apache.hadoop.hbase.io.hfile.LruBlockCache: LRU Stats: total=8.26 > >>> MB, free=190.08 MB, max=198.34 MB, blocks=112, accesses=57708231, > >>> hits=57708105, hitRatio=99.99%%, cachingAccesses=57708217, > >>> cachingHits=57708105, cachingHitsRatio=99.99%%, evictions=0, > >>> evicted=0, evictedPerRun=NaN > >>> > >>> > >>> On Wed, Apr 20, 2011 at 12:35 PM, Stack <stack@xxxxxxxxxx> wrote: > >>>> If one region only, then its located on a single regionserver. Tail > >>>> that regionservers logs. It might tell us something. > >>>> St.Ack > >>>> > >>>> On Wed, Apr 20, 2011 at 12:25 PM, Stack <stack@xxxxxxxxxx> wrote: > >>>>> On Wed, Apr 20, 2011 at 12:25 PM, Stack <stack@xxxxxxxxxx> wrote: > >>>>>> On Tue, Apr 19, 2011 at 4:46 PM, Dmitriy Lyubimov < > dlyubimov@xxxxxxxxxx> wrote: > >>>>>>> Right now i am shooting scans returning between 3 and 40 rows and > >>>>>>> regardless of data size, approximately 500-400 QPS. The data tables > >>>>>>> are almost empty and in-memory, so they surely should fit in those > 40% > >>>>>>> heap dedicated to them. > >>>>>>> > >>>>>> > >>>>>> How many clients are going against the cluster? If you use less, do > >>>>>> your numbers improve? > >>>>>> > >>>>> > >>>>> And all these clients are going against a single 40 row table? > >>>>> St.Ack > >>>>> > >>>> > >>> > >> > > >

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C2C DealC2C Req: Software Developer Engineer in Test_6+months_Redmond-WA

Hi,   If available, would you be interested in the following role.   Title: Software Developer Engineer in Test (SDET) Location: Redmond, WA Duration: 6+ Months   Description: ·         Very good coding skills in C# ·         Has been a SDET in active projects for the last 2+ years ·         Strong application testing skills and troubleshooting skills; ·         Good experience in Test Automation, writing test scripts, creating test plans/scenarios ·         UI testing skills are a plus   Thanks & Regards, Atul Kumar esoLuTions Phone: 408-693-3160 Fax: 408-521-0167 atul.kumar@xxxxxxxxxxxxxxxxxx www.e-solutionsinc.com Disclaimer: We respect your Online Privacy. This is not an unsolicited mail. Under Bill 1618 Title III passed by the 105th U.S. Congress this mail cannot be considered Spam as long as we include Contact Information and a method to be removed from our mailing list. If you are not interested in receiving our emails then please reply with a "REMOVE" in the subject line and mention all the email addresses to be removed with any email addresses. -- You received this message because you are subscribed to the Google Groups "C2C DealC2C" group. To post to this group, send email to c2c-deal-c2c@xxxxxxxxxxxxxxxxx To unsubscribe from this group, send email to c2c-deal-c2c+unsubscribe@xxxxxxxxxxxxxxxxx For more options, visit this group at http://groups.google.com/group/c2c-deal-c2c?hl=en.

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svn commit: r1095501 - in /commons/proper/configuration/branches/configuration2_experimental/src: changes/changes.xml main/java/org/apache/commons/configuration2/XMLConfiguration.java test/java/org/apache/commons/configuration2/TestXMLConfiguration.java

Author: oheger Date: Wed Apr 20 20:14:30 2011 New Revision: 1095501 URL: http://svn.apache.org/viewvc?rev=1095501&view=rev Log: [CONFIGURATION-446] Attributes whose value is an empty string are no more removed on saving the configuration. Ported fix to configuration2 branch. Modified: commons/proper/configuration/branches/configuration2_experimental/src/changes/changes.xml commons/proper/configuration/branches/configuration2_experimental/src/main/java/org/apache/commons/configuration2/XMLConfiguration.java commons/proper/configuration/branches/configuration2_experimental/src/test/java/org/apache/commons/configuration2/TestXMLConfiguration.java Modified: commons/proper/configuration/branches/configuration2_experimental/src/changes/changes.xml URL: http://svn.apache.org/viewvc/commons/proper/configuration/branches/configuration2_experimental/src/changes/changes.xml?rev=1095501&r1=1095500&r2=1095501&view=diff ============================================================================== --- commons/proper/configuration/branches/configuration2_experimental/src/changes/changes.xml (original) +++ commons/proper/configuration/branches/configuration2_experimental/src/changes/changes.xml Wed Apr 20 20:14:30 2011 @@ -79,6 +79,10 @@ </release> <release version="1.7" date="in SVN" description=""> + <action dev="oheger" type="update" issue="CONFIGURATION-446"> + XMLConfiguration now handles attributes correctly whose value is an + empty string. + </action> <action dev="oheger" type="update" issue="CONFIGURATION-439"> Child configuration builders created for a &lt;configuration&gt; element in a configuration definition file now inherit the configuration and Modified: commons/proper/configuration/branches/configuration2_experimental/src/main/java/org/apache/commons/configuration2/XMLConfiguration.java URL: http://svn.apache.org/viewvc/commons/proper/configuration/branches/configuration2_experimental/src/main/java/org/apache/commons/configuration2/XMLConfiguration.java?rev=1095501&r1=1095500&r2=1095501&view=diff ============================================================================== --- commons/proper/configuration/branches/configuration2_experimental/src/main/java/org/apache/commons/configuration2/XMLConfiguration.java (original) +++ commons/proper/configuration/branches/configuration2_experimental/src/main/java/org/apache/commons/configuration2/XMLConfiguration.java Wed Apr 20 20:14:30 2011 @@ -1494,6 +1494,7 @@ public class XMLConfiguration extends Ab { if (node != null && elem != null) { + boolean hasAttribute = false; List<ConfigurationNode> attributes = node.getAttributes(name); StringBuilder buf = new StringBuilder(); char delimiter = (listDelimiter != 0) ? listDelimiter : ATTR_VALUE_DELIMITER; @@ -1501,6 +1502,7 @@ public class XMLConfiguration extends Ab { if (attribute.getValue() != null) { + hasAttribute = true; if (buf.length() > 0) { buf.append(delimiter); @@ -1513,7 +1515,7 @@ public class XMLConfiguration extends Ab attribute.setReference(elem); } - if (buf.length() < 1) + if (!hasAttribute) { elem.removeAttribute(name); } Modified: commons/proper/configuration/branches/configuration2_experimental/src/test/java/org/apache/commons/configuration2/TestXMLConfiguration.java URL: http://svn.apache.org/viewvc/commons/proper/configuration/branches/configuration2_experimental/src/test/java/org/apache/commons/configuration2/TestXMLConfiguration.java?rev=1095501&r1=1095500&r2=1095501&view=diff ============================================================================== --- commons/proper/configuration/branches/configuration2_experimental/src/test/java/org/apache/commons/configuration2/TestXMLConfiguration.java (original) +++ commons/proper/configuration/branches/configuration2_experimental/src/test/java/org/apache/commons/configuration2/TestXMLConfiguration.java Wed Apr 20 20:14:30 2011 @@ -1631,6 +1631,23 @@ public class TestXMLConfiguration extend } */ /** + * Tests whether an attribute can be set to an empty string. This test is + * related to CONFIGURATION-446. + */ + public void testEmptyAttribute() throws ConfigurationException + { + String key = "element3[@value]"; + conf.setProperty(key, ""); + assertTrue("Key not found", conf.containsKey(key)); + assertEquals("Wrong value", "", conf.getString(key)); + conf.save(testSaveConf); + conf = new XMLConfiguration(); + conf.load(testSaveConf); + assertTrue("Key not found after save", conf.containsKey(key)); + assertEquals("Wrong value after save", "", conf.getString(key)); + } + + /** * Prepares a configuration object for testing a reload operation. * * @return the initialized configuration

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C2C DealC2C Req: Software Developer Engineer in Test_6+months_Redmond-WA

Hi,   If available, would you be interested in the following role.   Title: Software Developer Engineer in Test (SDET) Location: Redmond, WA Duration: 6+ Months   Description: ·         Very good coding skills in C# ·         Has been a SDET in active projects for the last 2+ years ·         Strong application testing skills and troubleshooting skills; ·         Good experience in Test Automation, writing test scripts, creating test plans/scenarios ·         UI testing skills are a plus   Thanks & Regards, Atul Kumar esoLuTions Phone: 408-693-3160 Fax: 408-521-0167 atul.kumar@xxxxxxxxxxxxxxxxxx www.e-solutionsinc.com Disclaimer: We respect your Online Privacy. This is not an unsolicited mail. Under Bill 1618 Title III passed by the 105th U.S. Congress this mail cannot be considered Spam as long as we include Contact Information and a method to be removed from our mailing list. If you are not interested in receiving our emails then please reply with a "REMOVE" in the subject line and mention all the email addresses to be removed with any email addresses. -- You received this message because you are subscribed to the Google Groups "C2C DealC2C" group. To post to this group, send email to c2c-deal-c2c@xxxxxxxxxxxxxxxxx To unsubscribe from this group, send email to c2c-deal-c2c+unsubscribe@xxxxxxxxxxxxxxxxx For more options, visit this group at http://groups.google.com/group/c2c-deal-c2c?hl=en.