Re: Solr performance issue on querying --> Solr 6.5.1
Hi Erick, As suggested, I did try nonHDFS solr cloud instance and it response looks to be really better. From the configuration side to, I am mostly using default configurations and with block.cache.direct.memory.allocation as false. On analysis of hdfs cache, evictions seems to be on higher side. Thanks, Arun -- Sent from: http://lucene.472066.n3.nabble.com/Solr-User-f472068.html
Re: Solr performance issue on querying --> Solr 6.5.1
Hi Arun, It is hard to measure something without affecting it, but we could use debug results and combine with QTime without debug: If we ignore merging results, it seems that majority of time is spent for retrieving docs (~500ms). You should consider reducing number of rows if you want better response time (you can ask for rows=0 to see max possible time). Also, as Erick suggested, reducing number of shards (1 if not plan much more doc) will trim some overhead of merging results. Thanks, Emir I noticed that you removed bq - is time with bq acceptable as well? > On 27 Sep 2017, at 12:34, sasarun wrote: > > Hi Emir, > > Please find the response without bq parameter and debugQuery set to true. > Also it was noted that Qtime comes down drastically without the debug > parameter to about 700-800. > > > true > 0 > 3446 > > > ("hybrid electric powerplant" "hybrid electric powerplants" "Electric" > "Electrical" "Electricity" "Engine" "fuel economy" "fuel efficiency" "Hybrid > Electric Propulsion" "Power Systems" "Powerplant" "Propulsion" "hybrid" > "hybrid electric" "electric powerplant") > > edismax > on > > host > title > url > customContent > contentSpecificSearch > > > id > contentOntologyTagsCount > > 0 > OR > 3985d7e2-3e54-48d8-8336-229e85f5d9de > 600 > true > > > maxScore="56.74194">... > > > > solr-prd-cluster-m-GooglePatent_shard4_replica2-1506504238282-20 > > > > 35 > 159 > GET_TOP_IDS > 41294 > ... > > > 29 > 165 > GET_TOP_IDS > 40980 > ... > > > 31 > 200 > GET_TOP_IDS > 41006 > ... > > > 43 > 208 > GET_TOP_IDS > 41040 > ... > > > 181 > 466 > GET_TOP_IDS > 41138 > ... > > > > > 1518 > 1523 > GET_FIELDS,GET_DEBUG > 110 > ... > > > 1562 > 1573 > GET_FIELDS,GET_DEBUG > 115 > ... > > > 1793 > 1800 > GET_FIELDS,GET_DEBUG > 120 > ... > > > 2153 > 2161 > GET_FIELDS,GET_DEBUG > 125 > ... > > > 2957 > 2970 > GET_FIELDS,GET_DEBUG > 130 > ... > > > > > 10302.0 > > 2.0 > > 2.0 > > > 0.0 > > > 0.0 > > > 0.0 > > > 0.0 > > > 0.0 > > > 0.0 > > > 0.0 > > > 0.0 > > > > 10288.0 > > 661.0 > > > 0.0 > > > 0.0 > > > 0.0 > > > 0.0 > > > 0.0 > > > 0.0 > > > 0.0 > > > 9627.0 > > > > > ("hybrid electric powerplant" "hybrid electric powerplants" "Electric" > "Electrical" "Electricity" "Engine" "fuel economy" "fuel efficiency" "Hybrid > Electric Propulsion" "Power Systems" "Powerplant" "Propulsion" "hybrid" > "hybrid electric" "electric powerplant") > > > ("hybrid electric powerplant" "hybrid electric powerplants" "Electric" > "Electrical" "Electricity" "Engine" "fuel economy" "fuel efficiency" "Hybrid > Electric Propulsion" "Power Systems" "Powerplant" "Propulsion" "hybrid" > "hybrid electric" "electric powerplant") > > > (+(DisjunctionMaxQuery((host:hybrid electric powerplant | > contentSpecificSearch:"hybrid electric powerplant" | customContent:"hybrid > electric powerplant" | title:hybrid electric powerplant | url:hybrid > electric powerplant)) DisjunctionMaxQuery((host:hybrid electric powerplants > | contentSpecificSearch:"hybrid electric powerplants" | > customContent:"hybrid electric powerplants" | title:hybrid electric > powerplants | url:hybrid electric powerplants)) > DisjunctionMaxQuery((host:Electric | contentSpecificSearch:electric | > customContent:electric | title:Electric | url:Electric)) > DisjunctionMaxQuery((host:Electrical | contentSpecificSearch:electrical | > customContent:electrical | title:Electrical | url:Electrical)) > DisjunctionMaxQuery((host:Electricity | contentSpecificSearch:electricity | > customContent:electricity | title:Electricity | url:Electricity)) > DisjunctionMaxQuery((host:Engine | contentSpecificSearch:engine | > customContent:engine | title:Engine | url:Engine)) > DisjunctionMaxQuery((host:fuel economy | contentSpecificSearch:"fuel > economy" | customContent:"fuel economy" | title:fuel economy | url:fuel > economy)) DisjunctionMaxQuery((host:fuel efficiency | > contentSpecificSearch:"fuel efficiency" | customContent:"fuel efficiency" | > title:fuel efficiency | url:fuel efficiency)) > DisjunctionMaxQuery((host:Hybrid Electric Propulsion | > contentSpecificSearch:"hybrid electric propulsion" | customContent:"hybrid > electric propulsion" | title:Hybrid Electric Propulsion | url:Hybrid > Electric Propulsion)) DisjunctionMaxQuery((host:Power Systems | > contentSpecificSearch:"power systems" | customContent:"power systems" | > title:Power Systems | url:Power Systems)) > DisjunctionMaxQuery((host:Powerplant | contentSpecificSearch:powerplant | > customContent:powerplant | title:Powerplant | url:Powerplant)) > DisjunctionMaxQuery((host:Propulsion | contentSpecificSearch:propulsion | > customContent:propulsion | title:Propulsion | url:Propulsion)) > DisjunctionMaxQuery((host:hybrid | contentSpecificSearch:hybrid | > customContent:hybrid | title:hybrid | url:hybrid)) > DisjunctionMaxQuery((host:hybrid electric | contentSpecificSearch:"hybrid > electric" | customContent:"hybrid electric" | title:h
Re: Solr performance issue on querying --> Solr 6.5.1
Hi Emir, Please find the response without bq parameter and debugQuery set to true. Also it was noted that Qtime comes down drastically without the debug parameter to about 700-800. true 0 3446 ("hybrid electric powerplant" "hybrid electric powerplants" "Electric" "Electrical" "Electricity" "Engine" "fuel economy" "fuel efficiency" "Hybrid Electric Propulsion" "Power Systems" "Powerplant" "Propulsion" "hybrid" "hybrid electric" "electric powerplant") edismax on host title url customContent contentSpecificSearch id contentOntologyTagsCount 0 OR 3985d7e2-3e54-48d8-8336-229e85f5d9de 600 true ... solr-prd-cluster-m-GooglePatent_shard4_replica2-1506504238282-20 35 159 GET_TOP_IDS 41294 ... 29 165 GET_TOP_IDS 40980 ... 31 200 GET_TOP_IDS 41006 ... 43 208 GET_TOP_IDS 41040 ... 181 466 GET_TOP_IDS 41138 ... 1518 1523 GET_FIELDS,GET_DEBUG 110 ... 1562 1573 GET_FIELDS,GET_DEBUG 115 ... 1793 1800 GET_FIELDS,GET_DEBUG 120 ... 2153 2161 GET_FIELDS,GET_DEBUG 125 ... 2957 2970 GET_FIELDS,GET_DEBUG 130 ... 10302.0 2.0 2.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 10288.0 661.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 9627.0 ("hybrid electric powerplant" "hybrid electric powerplants" "Electric" "Electrical" "Electricity" "Engine" "fuel economy" "fuel efficiency" "Hybrid Electric Propulsion" "Power Systems" "Powerplant" "Propulsion" "hybrid" "hybrid electric" "electric powerplant") ("hybrid electric powerplant" "hybrid electric powerplants" "Electric" "Electrical" "Electricity" "Engine" "fuel economy" "fuel efficiency" "Hybrid Electric Propulsion" "Power Systems" "Powerplant" "Propulsion" "hybrid" "hybrid electric" "electric powerplant") (+(DisjunctionMaxQuery((host:hybrid electric powerplant | contentSpecificSearch:"hybrid electric powerplant" | customContent:"hybrid electric powerplant" | title:hybrid electric powerplant | url:hybrid electric powerplant)) DisjunctionMaxQuery((host:hybrid electric powerplants | contentSpecificSearch:"hybrid electric powerplants" | customContent:"hybrid electric powerplants" | title:hybrid electric powerplants | url:hybrid electric powerplants)) DisjunctionMaxQuery((host:Electric | contentSpecificSearch:electric | customContent:electric | title:Electric | url:Electric)) DisjunctionMaxQuery((host:Electrical | contentSpecificSearch:electrical | customContent:electrical | title:Electrical | url:Electrical)) DisjunctionMaxQuery((host:Electricity | contentSpecificSearch:electricity | customContent:electricity | title:Electricity | url:Electricity)) DisjunctionMaxQuery((host:Engine | contentSpecificSearch:engine | customContent:engine | title:Engine | url:Engine)) DisjunctionMaxQuery((host:fuel economy | contentSpecificSearch:"fuel economy" | customContent:"fuel economy" | title:fuel economy | url:fuel economy)) DisjunctionMaxQuery((host:fuel efficiency | contentSpecificSearch:"fuel efficiency" | customContent:"fuel efficiency" | title:fuel efficiency | url:fuel efficiency)) DisjunctionMaxQuery((host:Hybrid Electric Propulsion | contentSpecificSearch:"hybrid electric propulsion" | customContent:"hybrid electric propulsion" | title:Hybrid Electric Propulsion | url:Hybrid Electric Propulsion)) DisjunctionMaxQuery((host:Power Systems | contentSpecificSearch:"power systems" | customContent:"power systems" | title:Power Systems | url:Power Systems)) DisjunctionMaxQuery((host:Powerplant | contentSpecificSearch:powerplant | customContent:powerplant | title:Powerplant | url:Powerplant)) DisjunctionMaxQuery((host:Propulsion | contentSpecificSearch:propulsion | customContent:propulsion | title:Propulsion | url:Propulsion)) DisjunctionMaxQuery((host:hybrid | contentSpecificSearch:hybrid | customContent:hybrid | title:hybrid | url:hybrid)) DisjunctionMaxQuery((host:hybrid electric | contentSpecificSearch:"hybrid electric" | customContent:"hybrid electric" | title:hybrid electric | url:hybrid electric)) DisjunctionMaxQuery((host:electric powerplant | contentSpecificSearch:"electric powerplant" | customContent:"electric powerplant" | title:electric powerplant | url:electric powerplant/no_coord +((host:hybrid electric powerplant | contentSpecificSearch:"hybrid electric powerplant" | customContent:"hybrid electric powerplant" | title:hybrid electric powerplant | url:hybrid electric powerplant) (host:hybrid electric powerplants | contentSpecificSearch:"hybrid electric powerplants" | customContent:"hybrid electric powerplants" | title:hybrid electric powerplants | url:hybrid electric powerplants) (host:Electric | contentSpecificSearch:electric | customContent:electric | title:Electric | url:Electric) (host:Electrical | contentSpecificSearch:electrical | customContent:electrical | title:Electrical | url:Electrical) (host:Electricity | contentSpecificSearch:electricity | customContent:electricity | title:Electricity | url:Electricity) (host:Engine | contentSpecificSearch:engine | customContent:engine | title:Engine | url:Engine) (host:fuel econ
Re: Solr performance issue on querying --> Solr 6.5.1
Hi Erick, Qtime comes down with rows set as 1. Also it was noted that qtime comes down when debug parameter is not added with the query. It comes to about 900. Thanks, Arun -- Sent from: http://lucene.472066.n3.nabble.com/Solr-User-f472068.html
Re: Solr performance issue on querying --> Solr 6.5.1
On Tue, 2017-09-26 at 07:43 -0700, sasarun wrote: > Allocated heap size for young generation is about 8 gb and old > generation is about 24 gb. And gc analysis showed peak > size utlisation is really low compared to these values. That does not come as a surprise. Your collections would normally be considered small, if not tiny, looking only at their size measured in bytes. Again, if you expect them to grow significantly (more than 10x), your allocation might make sense. If you do not expect such a growth in the near future, you will be better off with a much smaller heap: The peak heap utilization that you have logged (or twice that to err on the cautious side) seems a good starting point. And whatever you do, don't set Xmx to 32GB. Use <31GB or significantly more than 32GB: https://blog.codecentric.de/en/2014/02/35gb-heap-less-32gb-java-jvm-mem ory-oddities/ Are you indexing while you search? If so, you need to set auto-warm or state a few explicit warmup-queries. If not, your measuring will not be representative as it will be on first-searches, which are always slower than warmed-searches. - Toke Eskildsen, Royal Danish Library
Re: Solr performance issue on querying --> Solr 6.5.1
Hi Arun, This is not the most simple query either - a dozen of phrase queries on several fields + the same query as bq. Can you provide debugQuery info. I did not look much into debug times and what includes what, but one thing that is strange to me is that QTime is 4s while query in debug is 1.3s. Can you try running without bq? Can you include boost factors in the main query? Thanks, Emir > On 26 Sep 2017, at 16:43, sasarun wrote: > > Hi All, > I have been using Solr for some time now but mostly in standalone mode. Now > my current project is using Solr 6.5.1 hosted on hadoop. My solrconfig.xml > has the following configuration. In the prod environment the performance on > querying seems to really slow. Can anyone help me with few pointers on > howimprove on the same. > > >${solr.hdfs.home:} > name="solr.hdfs.blockcache.enabled">${solr.hdfs.blockcache.enabled:true} > name="solr.hdfs.blockcache.slab.count">${solr.hdfs.blockcache.slab.count:1} > name="solr.hdfs.blockcache.direct.memory.allocation">${solr.hdfs.blockcache.direct.memory.allocation:false} > name="solr.hdfs.blockcache.blocksperbank">${solr.hdfs.blockcache.blocksperbank:16384} > name="solr.hdfs.blockcache.read.enabled">${solr.hdfs.blockcache.read.enabled:true} > name="solr.hdfs.blockcache.write.enabled">${solr.hdfs.blockcache.write.enabled:false} > name="solr.hdfs.nrtcachingdirectory.enable">${solr.hdfs.nrtcachingdirectory.enable:true} > name="solr.hdfs.nrtcachingdirectory.maxmergesizemb">${solr.hdfs.nrtcachingdirectory.maxmergesizemb:16} > name="solr.hdfs.nrtcachingdirectory.maxcachedmb">${solr.hdfs.nrtcachingdirectory.maxcachedmb:192} > >hdfs > It has 6 collections of following size > Collection 1 -->6.41 MB > Collection 2 -->634.51 KB > Collection 3 -->4.59 MB > Collection 4 -->1,020.56 MB > Collection 5 --> 607.26 MB > Collection 6 -->102.4 kb > Each Collection has 5 shards each. Allocated heap size for young generation > is about 8 gb and old generation is about 24 gb. And gc analysis showed peak > size > utlisation is really low compared to these values. > But querying to Collection 4 and collection 5 is giving really slow response > even thoughwe are not using any complex queries.Output of debug quries run > with debug=timing > are given below for reference. Can anyone help suggest a way improve the > performance. > > Response to query > > > true > 0 > 3962 > > > ("hybrid electric powerplant" "hybrid electric powerplants" "Electric" > "Electrical" "Electricity" "Engine" "fuel economy" "fuel efficiency" "Hybrid > Electric Propulsion" "Power Systems" "Powerplant" "Propulsion" "hybrid" > "hybrid electric" "electric powerplant") > > edismax > true > on > > host > title > url > customContent > contentSpecificSearch > > > id > contentTagsCount > > 0 > OR > OR > 3985d7e2-3e54-48d8-8336-229e85f5d9de > 600 > > ("hybrid electric powerplant"^100.0 "hybrid electric powerplants"^100.0 > "Electric"^50.0 "Electrical"^50.0 "Electricity"^50.0 "Engine"^50.0 "fuel > economy"^50.0 "fuel efficiency"^50.0 "Hybrid Electric Propulsion"^50.0 > "Power Systems"^50.0 "Powerplant"^50.0 "Propulsion"^50.0 "hybrid"^15.0 > "hybrid electric"^15.0 "electric powerplant"^15.0) > > > > > > 15374.0 > > 2.0 > > 2.0 > > > 0.0 > > > 0.0 > > > 0.0 > > > 0.0 > > > 0.0 > > > 0.0 > > > 0.0 > > > 0.0 > > > > 15363.0 > > 1313.0 > > > 0.0 > > > 0.0 > > > 0.0 > > > 0.0 > > > 0.0 > > > 0.0 > > > 0.0 > > > 14048.0 > > > > > > Thanks, > Arun > > > > -- > Sent from: http://lucene.472066.n3.nabble.com/Solr-User-f472068.html
Re: Solr performance issue on querying --> Solr 6.5.1
Well, 15 second responses are not what I'd expect either. But two things (just looked again) 1> note that the time to assemble the debug information is a large majority of your total time (14 of 15.3 seconds). 2> you're specifying 600 rows which is quite a lot as each one requires that a 16K block of data be read from disk and decompressed to assemble the "fl" list. so one quick test would be to set rows=1 or something. All that said, the QTime value returned does _not_ include <1> or <2> above and even 4 seconds seems excessive. Best, Erick On Tue, Sep 26, 2017 at 10:54 AM, sasarun wrote: > Hi Erick, > > Thank you for the quick response. Query time was relatively faster once it > is read from memory. But personally I always felt response time could be far > better. As suggested, We will try and set up in a non HDFS environment and > update on the results. > > Thanks, > Arun > > > > -- > Sent from: http://lucene.472066.n3.nabble.com/Solr-User-f472068.html
Re: Solr performance issue on querying --> Solr 6.5.1
Hi Erick, Thank you for the quick response. Query time was relatively faster once it is read from memory. But personally I always felt response time could be far better. As suggested, We will try and set up in a non HDFS environment and update on the results. Thanks, Arun -- Sent from: http://lucene.472066.n3.nabble.com/Solr-User-f472068.html
Re: Solr performance issue on querying --> Solr 6.5.1
Does the query time _stay_ low? Once the data is read from HDFS it should pretty much stay in memory. So my question is whether, once Solr warms up you see this kind of query response time. Have you tried this on a non HDFS system? That would be useful to help figure out where to look. And given the sizes of your collections, unless you expect them to get much larger, there's no reason to shard any of them. Sharding should only really be used when the collections are too big for a single shard as distributed searches inevitably have increased overhead. I expect _at least_ 20M documents/shard, and have seen 200M docs/shard. YMMV of course. Best, Erick On Tue, Sep 26, 2017 at 7:43 AM, sasarun wrote: > Hi All, > I have been using Solr for some time now but mostly in standalone mode. Now > my current project is using Solr 6.5.1 hosted on hadoop. My solrconfig.xml > has the following configuration. In the prod environment the performance on > querying seems to really slow. Can anyone help me with few pointers on > howimprove on the same. > > > ${solr.hdfs.home:} > name="solr.hdfs.blockcache.enabled">${solr.hdfs.blockcache.enabled:true} > name="solr.hdfs.blockcache.slab.count">${solr.hdfs.blockcache.slab.count:1} > name="solr.hdfs.blockcache.direct.memory.allocation">${solr.hdfs.blockcache.direct.memory.allocation:false} > name="solr.hdfs.blockcache.blocksperbank">${solr.hdfs.blockcache.blocksperbank:16384} > name="solr.hdfs.blockcache.read.enabled">${solr.hdfs.blockcache.read.enabled:true} > name="solr.hdfs.blockcache.write.enabled">${solr.hdfs.blockcache.write.enabled:false} > name="solr.hdfs.nrtcachingdirectory.enable">${solr.hdfs.nrtcachingdirectory.enable:true} > name="solr.hdfs.nrtcachingdirectory.maxmergesizemb">${solr.hdfs.nrtcachingdirectory.maxmergesizemb:16} > name="solr.hdfs.nrtcachingdirectory.maxcachedmb">${solr.hdfs.nrtcachingdirectory.maxcachedmb:192} > > hdfs > It has 6 collections of following size > Collection 1 -->6.41 MB > Collection 2 -->634.51 KB > Collection 3 -->4.59 MB > Collection 4 -->1,020.56 MB > Collection 5 --> 607.26 MB > Collection 6 -->102.4 kb > Each Collection has 5 shards each. Allocated heap size for young generation > is about 8 gb and old generation is about 24 gb. And gc analysis showed peak > size > utlisation is really low compared to these values. > But querying to Collection 4 and collection 5 is giving really slow response > even thoughwe are not using any complex queries.Output of debug quries run > with debug=timing > are given below for reference. Can anyone help suggest a way improve the > performance. > > Response to query > > > true > 0 > 3962 > > > ("hybrid electric powerplant" "hybrid electric powerplants" "Electric" > "Electrical" "Electricity" "Engine" "fuel economy" "fuel efficiency" "Hybrid > Electric Propulsion" "Power Systems" "Powerplant" "Propulsion" "hybrid" > "hybrid electric" "electric powerplant") > > edismax > true > on > > host > title > url > customContent > contentSpecificSearch > > > id > contentTagsCount > > 0 > OR > OR > 3985d7e2-3e54-48d8-8336-229e85f5d9de > 600 > > ("hybrid electric powerplant"^100.0 "hybrid electric powerplants"^100.0 > "Electric"^50.0 "Electrical"^50.0 "Electricity"^50.0 "Engine"^50.0 "fuel > economy"^50.0 "fuel efficiency"^50.0 "Hybrid Electric Propulsion"^50.0 > "Power Systems"^50.0 "Powerplant"^50.0 "Propulsion"^50.0 "hybrid"^15.0 > "hybrid electric"^15.0 "electric powerplant"^15.0) > > > > > > 15374.0 > > 2.0 > > 2.0 > > > 0.0 > > > 0.0 > > > 0.0 > > > 0.0 > > > 0.0 > > > 0.0 > > > 0.0 > > > 0.0 > > > > 15363.0 > > 1313.0 > > > 0.0 > > > 0.0 > > > 0.0 > > > 0.0 > > > 0.0 > > > 0.0 > > > 0.0 > > > 14048.0 > > > > > > Thanks, > Arun > > > > -- > Sent from: http://lucene.472066.n3.nabble.com/Solr-User-f472068.html
Solr performance issue on querying --> Solr 6.5.1
Hi All, I have been using Solr for some time now but mostly in standalone mode. Now my current project is using Solr 6.5.1 hosted on hadoop. My solrconfig.xml has the following configuration. In the prod environment the performance on querying seems to really slow. Can anyone help me with few pointers on howimprove on the same. ${solr.hdfs.home:} ${solr.hdfs.blockcache.enabled:true} ${solr.hdfs.blockcache.slab.count:1} ${solr.hdfs.blockcache.direct.memory.allocation:false} ${solr.hdfs.blockcache.blocksperbank:16384} ${solr.hdfs.blockcache.read.enabled:true} ${solr.hdfs.blockcache.write.enabled:false} ${solr.hdfs.nrtcachingdirectory.enable:true} ${solr.hdfs.nrtcachingdirectory.maxmergesizemb:16} ${solr.hdfs.nrtcachingdirectory.maxcachedmb:192} hdfs It has 6 collections of following size Collection 1 -->6.41 MB Collection 2 -->634.51 KB Collection 3 -->4.59 MB Collection 4 -->1,020.56 MB Collection 5 --> 607.26 MB Collection 6 -->102.4 kb Each Collection has 5 shards each. Allocated heap size for young generation is about 8 gb and old generation is about 24 gb. And gc analysis showed peak size utlisation is really low compared to these values. But querying to Collection 4 and collection 5 is giving really slow response even thoughwe are not using any complex queries.Output of debug quries run with debug=timing are given below for reference. Can anyone help suggest a way improve the performance. Response to query true 0 3962 ("hybrid electric powerplant" "hybrid electric powerplants" "Electric" "Electrical" "Electricity" "Engine" "fuel economy" "fuel efficiency" "Hybrid Electric Propulsion" "Power Systems" "Powerplant" "Propulsion" "hybrid" "hybrid electric" "electric powerplant") edismax true on host title url customContent contentSpecificSearch id contentTagsCount 0 OR OR 3985d7e2-3e54-48d8-8336-229e85f5d9de 600 ("hybrid electric powerplant"^100.0 "hybrid electric powerplants"^100.0 "Electric"^50.0 "Electrical"^50.0 "Electricity"^50.0 "Engine"^50.0 "fuel economy"^50.0 "fuel efficiency"^50.0 "Hybrid Electric Propulsion"^50.0 "Power Systems"^50.0 "Powerplant"^50.0 "Propulsion"^50.0 "hybrid"^15.0 "hybrid electric"^15.0 "electric powerplant"^15.0) 15374.0 2.0 2.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 15363.0 1313.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 14048.0 Thanks, Arun -- Sent from: http://lucene.472066.n3.nabble.com/Solr-User-f472068.html