There was a similar bug which was fixed in the trunk version. Let me dig that Jira ticket up.
On Thu, Sep 22, 2011 at 7:37 PM, bing wang <[email protected]> wrote: > PfpGrowth is also ok with the retails an daccidents dataset( > http://fimi.ua.ac.be/data/) when runing over my cluster. My cluster has > 1500+ nodes. > > As my cluster is built with hadoop-0.19, I modified the mahout-0.5 > PfpGrowth > MR job souce code to adapt with hadoop-0.19 by using the old hadoop > api(org.apache.hadoop.mapred.*), but i didn't change the Pfpgrowth > algorithm > itself. > > I don't think cache misses relate to distributed cache(if I am wrong, > please > correct me), it relates to FPTreeDepthCache. > > The status of the tasks which got stuck always showed* "Processing FPTree: > Bottom Up FP Growth reduce"*, > so I logged the status within FpGrowth.growthBottomUp(). > > * updater.update("Bottom Up FP Growth"); > log.info("Bottom Up FP Growth");* > > And then from logs, I found those stuck tasks was keep outputing *"Bottom > Up > FP Growth". > > *See *: > * > > -09-22 21:58:35,689 INFO > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Bottom Up FP Growth > 2011-09-22 21:58:35,690 INFO > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Bottom Up FP Growth > 2011-09-22 21:58:35,690 INFO > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Bottom Up FP Growth > 2011-09-22 21:58:35,690 INFO > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Bottom Up FP Growth > 2011-09-22 21:58:35,690 INFO > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Bottom Up FP Growth > 2011-09-22 21:58:35,691 INFO > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Bottom Up FP Growth > 2011-09-22 21:58:35,692 INFO > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Bottom Up FP Growth > 2011-09-22 21:58:35,693 INFO > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Bottom Up FP Growth > 2011-09-22 21:58:35,694 INFO > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Bottom Up FP Growth > 2011-09-22 21:58:35,694 INFO > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Bottom Up FP Growth > > It's mostly likely FpGrowth.growthBottomUp() run into very big deep > recursion, or even possiblely endless loop. > > > 2011/9/22 戴清灏 <[email protected]> > > > Hi, > > The Pfp-growth on my cluster is fine when I run it onto > > *webdocs.dat*dataset.( > > http://fimi.ua.ac.be/data/) > > My cluster has about 15 nodes and this will only take less than 10 > mins. > > I looked into you log and found that cache misses. > > Which version of mahout are you using? > > For mahout-0.4, it would not use distributed-cache provided by hadoop. > > For mahout-0.5, the code is a little bit different and it uses > > distributed cache, which will fetch FList and gList file before > execution. > > (setup method, in reducer) > > For more info about distributed cache in hadoop, see > > > > > http://hadoop.apache.org/common/docs/r0.20.2/api/org/apache/hadoop/filecache/DistributedCache.html > > > > Best, > > Roger Dai > > > > 2011/9/22 bing wang <[email protected]> > > > > > Hi all, > > > > > > I run PfpGrowth in a big hadoop cluster , but the ParallelFPgrowth MR > job > > > got stuck when some ParallelFPGrowthReducer tasks run into > > > fpGrowth.generateTopKFrequentPatterns(). > > > > > > I feed 6,468,284 record for PfpGrowth, and 110825 features greater than > > > minSupport(5), numGroups(20000), treeCacheSize(10) and with other > > paramters > > > as default. > > > I also set the hadoop mapred.child.java.opts option to 3g. > > > > > > The cluster started 20 ParallelFPGrowthReducer tasks, but about 10 > tasks > > > was > > > stuck at the same reason. > > > > > > See the reducer task log(Log 1): > > > > > > 2011-09-20 21:11:49,860 INFO > > > org.apache.mahout.fpm.pfpgrowth.ParallelCountingReducer: localFList > size > > > 871 > > > for key 8120 > > > 2011-09-20 21:11:49,860 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Number of unique > items > > > 871 > > > 2011-09-20 21:11:49,860 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Adding Pattern > > 48722=>3 > > > 2011-09-20 21:11:49,860 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Adding Pattern > > 48723=>4 > > > 2011-09-20 21:11:49,860 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Adding Pattern > > 48720=>5 > > > 2011-09-20 21:11:49,860 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Adding Pattern > > 48721=>0 > > > 2011-09-20 21:11:49,860 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Adding Pattern > > 48724=>2 > > > 2011-09-20 21:11:49,860 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Adding Pattern > > 48725=>1 > > > 2011-09-20 21:11:49,860 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Number of unique > > pruned > > > items 27 > > > 2011-09-20 21:11:49,861 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Number of Nodes in > the > > > FP > > > Tree: 93 > > > 2011-09-20 21:11:49,861 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Mining FTree Tree > for > > > all > > > patterns with 5 > > > 2011-09-20 21:11:49,861 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Found 2 Patterns > with > > > Least Support 10 > > > 2011-09-20 21:11:49,861 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Mining FTree Tree > for > > > all > > > patterns with 4 > > > 2011-09-20 21:11:49,861 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Found 1 Patterns > with > > > Least Support 13 > > > 2011-09-20 21:11:49,861 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Mining FTree Tree > for > > > all > > > patterns with 3 > > > 2011-09-20 21:11:49,862 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Found 2 Patterns > with > > > Least Support 13 > > > 2011-09-20 21:11:49,862 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Mining FTree Tree > for > > > all > > > patterns with 2 > > > 2011-09-20 21:11:49,862 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Found 1 Patterns > with > > > Least Support 14 > > > 2011-09-20 21:11:49,862 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Mining FTree Tree > for > > > all > > > patterns with 1 > > > 2011-09-20 21:11:49,863 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Found 1 Patterns > with > > > Least Support 15 > > > 2011-09-20 21:11:49,863 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Mining FTree Tree > for > > > all > > > patterns with 0 > > > 2011-09-20 21:11:49,863 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Found 2 Patterns > with > > > Least Support 17 > > > 2011-09-20 21:11:49,863 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Tree Cache: First > > Level: > > > Cache hits=20 Cache Misses=127 > > > 2011-09-20 21:11:49,864 INFO > > > org.apache.mahout.fpm.pfpgrowth.ParallelCountingReducer: localFList > size > > > 1410 for key 8140 > > > 2011-09-20 21:11:49,865 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Number of unique > items > > > 1410 > > > 2011-09-20 21:11:49,865 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Adding Pattern > > 48842=>22 > > > 2011-09-20 21:11:49,865 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Adding Pattern > > 48843=>23 > > > 2011-09-20 21:11:49,865 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Adding Pattern > > 48840=>21 > > > 2011-09-20 21:11:49,865 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Adding Pattern > > 48841=>27 > > > 2011-09-20 21:11:49,865 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Adding Pattern > > > 48844=>266 > > > 2011-09-20 21:11:49,865 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Adding Pattern > > 48845=>28 > > > 2011-09-20 21:11:49,865 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Number of unique > > pruned > > > items 353 > > > 2011-09-20 21:11:49,866 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Number of Nodes in > the > > > FP > > > Tree: 2512 > > > 2011-09-20 21:11:49,866 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Mining FTree Tree > for > > > all > > > patterns with 266 > > > > > > > > > From last line of Log 1, we can see the reducer task which get stuck is > > > mining FTree Tree for all patterns with the attribute 266. > > > > > > However I think the task is still running because some reducer tasks > will > > > keep moving after long time mining(see bellow log, Log 2) > > > > > > 2011-09-20 21:24:08,577 INFO > > > org.apache.mahout.fpm.pfpgrowth.ParallelCountingReducer: localFList > size > > > 1183 for key 13596 > > > 2011-09-20 21:24:08,578 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Number of unique > items > > > 1183 > > > 2011-09-20 21:24:08,578 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Adding Pattern > > > 81581=>250 > > > 2011-09-20 21:24:08,578 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Adding Pattern > > > 81580=>132 > > > 2011-09-20 21:24:08,578 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Adding Pattern > > > 81577=>129 > > > 2011-09-20 21:24:08,578 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Adding Pattern > > > 81576=>128 > > > 2011-09-20 21:24:08,578 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Adding Pattern > > > 81579=>131 > > > 2011-09-20 21:24:08,578 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Adding Pattern > > > 81578=>130 > > > 2011-09-20 21:24:08,578 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Number of unique > > pruned > > > items 251 > > > 2011-09-20 21:24:08,579 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Number of Nodes in > the > > > FP > > > Tree: 1376 > > > 2011-09-20 21:24:08,579 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Mining FTree Tree > for > > > all > > > patterns with 250 > > > 2011-09-20 21:24:08,579 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Found 2 Patterns > with > > > Least Support 5 > > > 2011-09-20 21:24:08,579 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Mining FTree Tree > for > > > all > > > patterns with 132 (take 2.5 hours ) > > > 2011-09-21 00:08:56,616 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Found 40 Patterns > with > > > Least Support 7 > > > 2011-09-21 00:08:56,665 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Mining FTree Tree > for > > > all > > > patterns with 131 > > > 2011-09-21 00:08:56,703 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Found 3 Patterns > with > > > Least Support 7 > > > 2011-09-21 00:08:56,703 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Mining FTree Tree > for > > > all > > > patterns with 130 > > > 2011-09-21 00:08:56,736 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Found 2 Patterns > with > > > Least Support 7 > > > 2011-09-21 00:08:56,736 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Mining FTree Tree > for > > > all > > > patterns with 129 > > > 2011-09-21 00:08:56,769 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Found 1 Patterns > with > > > Least Support 7 > > > 2011-09-21 00:08:56,769 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Mining FTree Tree > for > > > all > > > patterns with 128 > > > 2011-09-21 00:08:56,809 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Found 1 Patterns > with > > > Least Support 7 > > > 2011-09-21 00:08:56,809 INFO > > > org.apache.mahout.fpm.pfpgrowth.fpgrowth.FPGrowth: Tree Cache: First > > Level: > > > Cache hits=13 Cache Misses=475 > > > > > > And, the task status showed *"Processing FPTree: Bottom Up FP Growth > > > > reduce"*, which indicates that the job run into > FpGrowth.growthBottomUp() > > > and be stuck within FpGrowth.growthBottomUp(). > > > > > > Some reduers will hold at this status about 25 hours till I kill the > > whole > > > PfpGrowth job manually.(see job history as follows) > > > > > > *JobName: * PFP Parallel FPGrowth running over input > > (ignore)/sortedoutput > > > *JobConf: * > > > > > > > > > hdfs://hdpnn:9000/home/hadoop/cluster-data/mapred/system/job_201108301259_1089136/job.xml< > > > > > > http://10.249.54.103/jobconf_history.jsp?jobid=job_201108301259_1089136&logFile=file:/home/hadoop/cluster-data/logs/history/hdpjt_1314680340456_job_201108301259_1089136_lingfeng.wb_PFP%2BParallel%2BFPGrowth%2Brunning%2Bover%2Binput%252Fgroup%252Ftbp&jobLogDir=file:/home/hadoop/cluster-data/logs/history&jobUniqueString=hdpjt_1314680340456_job_201108301259_1089136 > > > > > > > *Submitted At: * 20-Sep-2011 20:31:57 > > > *Launched At: * 20-Sep-2011 20:32:04 (6sec) > > > *Finished At: * 21-Sep-2011 22:31:51 (25hrs, 59mins, 47sec) > > > *Status: * KILLED > > > *Analyse This Job< > > > > > > http://10.249.54.103/analysejobhistory.jsp?jobid=job_201108301259_1089136&logFile=file:/home/hadoop/cluster-data/logs/history/hdpjt_1314680340456_job_201108301259_1089136_lingfeng.wb_PFP%2BParallel%2BFPGrowth%2Brunning%2Bover%2Binput%252Fgroup%252Ftbp > > > > > > > * > > > ------------------------------ > > > > > > Counter Map Reduce Total KindTotal > > > Tasks(successful+failed+killed)Successful > > > tasksFailed tasksKilled tasksStart TimeFinish Time Setup > > > 1< > > > > > > http://10.249.54.103/jobtaskshistory.jsp?jobid=job_201108301259_1089136&logFile=file:/home/hadoop/cluster-data/logs/history/hdpjt_1314680340456_job_201108301259_1089136_lingfeng.wb_PFP%2BParallel%2BFPGrowth%2Brunning%2Bover%2Binput%252Fgroup%252Ftbp&taskType=SETUP&status=all > > > > > > > 1< > > > > > > http://10.249.54.103/jobtaskshistory.jsp?jobid=job_201108301259_1089136&logFile=file:/home/hadoop/cluster-data/logs/history/hdpjt_1314680340456_job_201108301259_1089136_lingfeng.wb_PFP%2BParallel%2BFPGrowth%2Brunning%2Bover%2Binput%252Fgroup%252Ftbp&taskType=SETUP&status=SUCCESS > > > > > > > 0< > > > > > > http://10.249.54.103/jobtaskshistory.jsp?jobid=job_201108301259_1089136&logFile=file:/home/hadoop/cluster-data/logs/history/hdpjt_1314680340456_job_201108301259_1089136_lingfeng.wb_PFP%2BParallel%2BFPGrowth%2Brunning%2Bover%2Binput%252Fgroup%252Ftbp&taskType=SETUP&status=FAILED > > > > > > > 0< > > > > > > http://10.249.54.103/jobtaskshistory.jsp?jobid=job_201108301259_1089136&logFile=file:/home/hadoop/cluster-data/logs/history/hdpjt_1314680340456_job_201108301259_1089136_lingfeng.wb_PFP%2BParallel%2BFPGrowth%2Brunning%2Bover%2Binput%252Fgroup%252Ftbp&taskType=SETUP&status=KILLED > > > > > > > 20-Sep-2011 > > > 20:32:06 20-Sep-2011 20:32:07 (0sec) Map > > > 28< > > > > > > http://10.249.54.103/jobtaskshistory.jsp?jobid=job_201108301259_1089136&logFile=file:/home/hadoop/cluster-data/logs/history/hdpjt_1314680340456_job_201108301259_1089136_lingfeng.wb_PFP%2BParallel%2BFPGrowth%2Brunning%2Bover%2Binput%252Fgroup%252Ftbp&taskType=MAP&status=all > > > > > > > 22< > > > > > > http://10.249.54.103/jobtaskshistory.jsp?jobid=job_201108301259_1089136&logFile=file:/home/hadoop/cluster-data/logs/history/hdpjt_1314680340456_job_201108301259_1089136_lingfeng.wb_PFP%2BParallel%2BFPGrowth%2Brunning%2Bover%2Binput%252Fgroup%252Ftbp&taskType=MAP&status=SUCCESS > > > > > > > 0< > > > > > > http://10.249.54.103/jobtaskshistory.jsp?jobid=job_201108301259_1089136&logFile=file:/home/hadoop/cluster-data/logs/history/hdpjt_1314680340456_job_201108301259_1089136_lingfeng.wb_PFP%2BParallel%2BFPGrowth%2Brunning%2Bover%2Binput%252Fgroup%252Ftbp&taskType=MAP&status=FAILED > > > > > > > 6< > > > > > > http://10.249.54.103/jobtaskshistory.jsp?jobid=job_201108301259_1089136&logFile=file:/home/hadoop/cluster-data/logs/history/hdpjt_1314680340456_job_201108301259_1089136_lingfeng.wb_PFP%2BParallel%2BFPGrowth%2Brunning%2Bover%2Binput%252Fgroup%252Ftbp&taskType=MAP&status=KILLED > > > > > > > 20-Sep-2011 > > > 20:32:13 20-Sep-2011 20:56:01 (23mins, 48sec) Reduce > > > 24< > > > > > > http://10.249.54.103/jobtaskshistory.jsp?jobid=job_201108301259_1089136&logFile=file:/home/hadoop/cluster-data/logs/history/hdpjt_1314680340456_job_201108301259_1089136_lingfeng.wb_PFP%2BParallel%2BFPGrowth%2Brunning%2Bover%2Binput%252Fgroup%252Ftbp&taskType=REDUCE&status=all > > > > > > > 18< > > > > > > http://10.249.54.103/jobtaskshistory.jsp?jobid=job_201108301259_1089136&logFile=file:/home/hadoop/cluster-data/logs/history/hdpjt_1314680340456_job_201108301259_1089136_lingfeng.wb_PFP%2BParallel%2BFPGrowth%2Brunning%2Bover%2Binput%252Fgroup%252Ftbp&taskType=REDUCE&status=SUCCESS > > > > > > > 0< > > > > > > http://10.249.54.103/jobtaskshistory.jsp?jobid=job_201108301259_1089136&logFile=file:/home/hadoop/cluster-data/logs/history/hdpjt_1314680340456_job_201108301259_1089136_lingfeng.wb_PFP%2BParallel%2BFPGrowth%2Brunning%2Bover%2Binput%252Fgroup%252Ftbp&taskType=REDUCE&status=FAILED > > > > > > > 6< > > > > > > http://10.249.54.103/jobtaskshistory.jsp?jobid=job_201108301259_1089136&logFile=file:/home/hadoop/cluster-data/logs/history/hdpjt_1314680340456_job_201108301259_1089136_lingfeng.wb_PFP%2BParallel%2BFPGrowth%2Brunning%2Bover%2Binput%252Fgroup%252Ftbp&taskType=REDUCE&status=KILLED > > > > > > > 20-Sep-2011 > > > 20:32:33 21-Sep-2011 22:31:51 (25hrs, 59mins, 18sec) Cleanup > > > 1< > > > > > > http://10.249.54.103/jobtaskshistory.jsp?jobid=job_201108301259_1089136&logFile=file:/home/hadoop/cluster-data/logs/history/hdpjt_1314680340456_job_201108301259_1089136_lingfeng.wb_PFP%2BParallel%2BFPGrowth%2Brunning%2Bover%2Binput%252Fgroup%252Ftbp&taskType=CLEANUP&status=all > > > > > > > 1< > > > > > > http://10.249.54.103/jobtaskshistory.jsp?jobid=job_201108301259_1089136&logFile=file:/home/hadoop/cluster-data/logs/history/hdpjt_1314680340456_job_201108301259_1089136_lingfeng.wb_PFP%2BParallel%2BFPGrowth%2Brunning%2Bover%2Binput%252Fgroup%252Ftbp&taskType=CLEANUP&status=SUCCESS > > > > > > > 0< > > > > > > http://10.249.54.103/jobtaskshistory.jsp?jobid=job_201108301259_1089136&logFile=file:/home/hadoop/cluster-data/logs/history/hdpjt_1314680340456_job_201108301259_1089136_lingfeng.wb_PFP%2BParallel%2BFPGrowth%2Brunning%2Bover%2Binput%252Fgroup%252Ftbp&taskType=CLEANUP&status=FAILED > > > > > > > 0< > > > > > > http://10.249.54.103/jobtaskshistory.jsp?jobid=job_201108301259_1089136&logFile=file:/home/hadoop/cluster-data/logs/history/hdpjt_1314680340456_job_201108301259_1089136_lingfeng.wb_PFP%2BParallel%2BFPGrowth%2Brunning%2Bover%2Binput%252Fgroup%252Ftbp&taskType=CLEANUP&status=KILLED > > > > > > > 21-Sep-2011 > > > 22:31:50 21-Sep-2011 22:31:51 (0sec) > > > > > > > > > In Log 2, we see FP Tree for key 13596 only includes 1376 nodes, > > > however it take 2.5 hours to ming patterns for 132. > > > > > > So why it was so slowly when mining frequent patterns for some > > attributes? > > > What's the reason behinds that or how can I resolve? > > > > > > Thanks in advance! > > > > > > > > > > > > -- > > > Gmail/talk: [email protected] > > > > > > > > > -- > Gmail/talk: [email protected] >
