| Re: [geowave-dev] GSOC 2015-GeoWave Monitor: Map-Based Accumulo Status and Health |
So, using the listSplits operation, you get an array of Text objects. This doesn't give you the full range of each tablet, but it does tell you where they split.In order to get a range, you can convert the Text objects to Keys using http://accumulo.apache.org/1.4/apidocs/org/apache/accumulo/core/data/Key.html#Key%28org.apache.hadoop.io.Text%29Once you have the Accumulo Keys corresponding to each of the splits, it should be very easy to create your ranges.For starters, scanning the table for the first key is a valid idea, but it concerns me to hear that you had an exception during a scan... That doesn't sound right.The easier way would be to use the Accumulo Range class. Check out this method, and pay particular attention to the parameter descriptions: http://accumulo.apache.org/1.4/apidocs/org/apache/accumulo/core/data/Range.html#Range%28org.apache.accumulo.core.data.Key,%20org.apache.accumulo.core.data.Key%29Let me know if that helps!On Thu, Jul 16, 2015 at 1:12 PM, Rukshan Chathuranga <rcrukshan17@xxxxxxxxx> wrote:Hi Whitney,Since listSplit() method give me starting row of tablet, i cannot find row that reside in first tablet. i tried with scanner and get first record to find it's range. but it gave me an exception.second part is still bit confuse me. but first i try to get the first tablet range while try to understanding second part. then i let you know.Thanks and Regards.Rukshan Chathuranga.Department Of Computer Science & Engineering,Faculty Of Engineering,University Of Moratuwa. Sri Lanka.On Thu, Jul 16, 2015 at 10:22 PM, Whitney O'Meara <james.w.omeara@xxxxxxxxx> wrote:Does that make sense?First off, you definitely should be able to get the range of the first tablet. What is the issue there?Second, What I'm saying is that you should query whatever table you're interested in displaying stats for using the ranges that you have generated. The query will give you the entries that have been ingested by the user(s) for that tablet. You can then use the SimpleFeatures that are returned to calculate a bounding area.On Thu, Jul 16, 2015 at 12:42 PM, Rukshan Chathuranga <rcrukshan17@xxxxxxxxx> wrote:Hi Whitney,what do you mean by "query the GeoWave namespace/table" . i write a code to get the range of tablets(but not first tablet). can you please explain this?Thanks and Regards.Rukshan Chathuranga.Department Of Computer Science & Engineering,Faculty Of Engineering,University Of Moratuwa. Sri Lanka.On Fri, Jul 10, 2015 at 10:53 PM, Whitney O'Meara <james.w.omeara@xxxxxxxxx> wrote:Go ahead and move on to task 2. I don't want to be a blocker for you.
I'll try to check your code out sometime this weekend and provide feedback.On Fri, Jul 10, 2015 at 12:10 PM, Rukshan Chathuranga <rcrukshan17@xxxxxxxxx> wrote:Hi Whitney,I implemented Test cases for Table[1] and Tablet[2] stats. Also i implement rest services[3][4] for them as well. Can you review it and let me know whether can i moved to task 2.Thanks and Regards.Rukshan Chathuranga.Department Of Computer Science & Engineering,Faculty Of Engineering,University Of Moratuwa. Sri Lanka.On Wed, Jul 8, 2015 at 8:55 PM, Whitney O'Meara <james.w.omeara@xxxxxxxxx> wrote:Look into MiniAccumuloCluster. You can (and should) use that to setup an accumulo cluster with geowave for unit tests.On Wed, Jul 8, 2015 at 11:11 AM, Rukshan Chathuranga <rcrukshan17@xxxxxxxxx> wrote:Hi Whitney,i implement two test case for each Tablet[1] and Table[2] Stat classed. Can you review and let me know, what should i improve?Since Accumulo Statistics are changed with time, it is difficult to define constant values to assert them. Also is there any way to automatically start Geowave with test cases. I used the GeoWaveDemoApp.java, but it seems it does not start as expected.Thanks and Regards.