Hello, I have an update here. spark SQL is pushing predicates down, if I load
the orc files in spark Context and Is not the same when I try to read hive
Table directly.please let me know if i am missing something here. Is this
supported in spark ? when I load the files in spark Context
scala> val hhhhhlogsv5 =
sqlContext.read.format("orc").load("/user/hive/warehouse/hhhhhlogsv5")
17/10/24 16:11:15 INFO OrcRelation: Listing
maprfs:///user/hive/warehouse/hhhhhlogsv5 on driver
17/10/24 16:11:15 INFO OrcRelation: Listing
maprfs:///user/hive/warehouse/hhhhhlogsv5/cdt=20171003 on driver
17/10/24 16:11:15 INFO OrcRelation: Listing
maprfs:///user/hive/warehouse/hhhhhlogsv5/cdt=20171003/catpartkey=others on
driver
17/10/24 16:11:15 INFO OrcRelation: Listing
maprfs:///user/hive/warehouse/hhhhhlogsv5/cdt=20171003/catpartkey=others/usrpartkey=hhhUsers
on driver
hhhhhlogsv5: org.apache.spark.sql.DataFrame = [id: string, chn: string, ht:
string, br: string, rg: string, cat: int, scat: int, usr: string, org: string,
act: int, ctm: int, c1: string, c2: string, c3: string, d1: int, d2: int, doc:
binary, cdt: int, catpartkey: string, usrpartkey: string]scala>
hhhhhlogsv5.registerTempTable("tempo")scala> sqlContext.sql ( "selecT id from
tempo where cdt=20171003 and usrpartkey = 'hhhUsers' and usr='AA0YP' order by
id desc limit 10" ).explain
17/10/24 16:11:22 INFO ParseDriver: Parsing command: selecT id from tempo where
cdt=20171003 and usrpartkey = 'hhhUsers' and usr='AA0YP' order by id desc limit
10
17/10/24 16:11:22 INFO ParseDriver: Parse Completed
17/10/24 16:11:22 INFO DataSourceStrategy: Selected 1 partitions out of 1,
pruned 0.0% partitions.
17/10/24 16:11:22 INFO MemoryStore: Block broadcast_6 stored as values in
memory (estimated size 164.5 KB, free 468.0 KB)
17/10/24 16:11:22 INFO MemoryStore: Block broadcast_6_piece0 stored as bytes in
memory (estimated size 18.3 KB, free 486.4 KB)
17/10/24 16:11:22 INFO BlockManagerInfo: Added broadcast_6_piece0 in memory on
172.21.158.61:43493 (size: 18.3 KB, free: 511.4 MB)
17/10/24 16:11:22 INFO SparkContext: Created broadcast 6 from explain at
<console>:33
17/10/24 16:11:22 INFO MemoryStore: Block broadcast_7 stored as values in
memory (estimated size 170.2 KB, free 656.6 KB)
17/10/24 16:11:22 INFO MemoryStore: Block broadcast_7_piece0 stored as bytes in
memory (estimated size 18.8 KB, free 675.4 KB)
17/10/24 16:11:22 INFO BlockManagerInfo: Added broadcast_7_piece0 in memory on
172.21.158.61:43493 (size: 18.8 KB, free: 511.4 MB)
17/10/24 16:11:22 INFO SparkContext: Created broadcast 7 from explain at
<console>:33
== Physical Plan ==
TakeOrderedAndProject(limit=10, orderBy=[id#145 DESC], output=[id#145])
+- ConvertToSafe
+- Project [id#145]
+- Filter (usr#152 = AA0YP)
+- Scan OrcRelation[id#145,usr#152] InputPaths:
maprfs:///user/hive/warehouse/hhhhhlogsv5, PushedFilters: [EqualTo(usr,AA0YP)]
when i read this as hive Table
scala> sqlContext.sql ( "selecT id from hhhhhlogsv5 where cdt=20171003 and
usrpartkey = 'hhhUsers' and usr='AA0YP' order by id desc limit 10" ).explain
17/10/24 16:11:32 INFO ParseDriver: Parsing command: selecT id from hhhhhlogsv5
where cdt=20171003 and usrpartkey = 'hhhUsers' and usr='AA0YP' order by id desc
limit 10
17/10/24 16:11:32 INFO ParseDriver: Parse Completed
17/10/24 16:11:32 INFO MemoryStore: Block broadcast_8 stored as values in
memory (estimated size 399.1 KB, free 1074.6 KB)
17/10/24 16:11:32 INFO MemoryStore: Block broadcast_8_piece0 stored as bytes in
memory (estimated size 42.7 KB, free 1117.2 KB)
17/10/24 16:11:32 INFO BlockManagerInfo: Added broadcast_8_piece0 in memory on
172.21.158.61:43493 (size: 42.7 KB, free: 511.4 MB)
17/10/24 16:11:32 INFO SparkContext: Created broadcast 8 from explain at
<console>:33
== Physical Plan ==
TakeOrderedAndProject(limit=10, orderBy=[id#192 DESC], output=[id#192])
+- ConvertToSafe
+- Project [id#192]
+- Filter (usr#199 = AA0YP)
+- HiveTableScan [id#192,usr#199], MetastoreRelation default, hhhhhlogsv5,
None, [(cdt#189 = 20171003),(usrpartkey#191 = hhhUsers)]
please let me know if i am missing anything here. thank you
On Monday, October 23, 2017 1:56 PM, Siva Gudavalli <gss.su...@gmail.com>
wrote:
Hello, I am working with Spark SQL to query Hive Managed Table (in Orc Format)
I have my data organized by partitions and asked to set indexes for each 50,000
Rows by setting ('orc.row.index.stride'='50000') lets say -> after evaluating
partition there are around 50 files in which data is organized. Each file
contains data specific to one given "cat" and I have set up a bloom filter on
cat.
my spark SQL query looks like this -> select * from logs where cdt= 20171002
and catpartkey= others and usrpartkey= logUsers and cat = 24;
I have set following property in my spark Sql context and assuming this will
push down the filters
sqlContext.setConf("spark.sql.orc.filterPushdown", "true")
Never my filters are being pushed down. and it seems like partition pruning is
happening on all files. I dont understand no matter what my query is, it is
triggering 50 tasks and reading all files. Here is my debug logs ->
17/10/23 17:26:43 DEBUG Inode: >Inode Open file:
/apps/spark/auditlogsv5/cdt=20171002/catpartkey=others/usrpartkey=logUsers/000026_0,
size: 401517212, chunkSize: 268435456, fid: 2052.225472.4786362
17/10/23 17:26:43 DEBUG OrcInputFormat: No ORC pushdown predicate
17/10/23 17:26:43 INFO OrcRawRecordMerger: min key = null, max key = null
17/10/23 17:26:43 INFO ReaderImpl: Reading ORC rows from
maprfs:///apps/spark/logs/cdt=20171002/catpartkey=others/usrpartkey=logUsers/000026_0
with {include: [true, true, false, false, false, false, true, false, false,
false, false, false, false, false, false, false, false, false], offset: 0,
length: 9223372036854775807}
17/10/23 17:26:43 DEBUG MapRClient: Open: path =
/apps/spark/auditlogsv5/cdt=20171002/catpartkey=others/usrpartkey=logUsers/000026_0
17/10/23 17:26:43 DEBUG Inode: >Inode Open file:
/apps/spark/auditlogsv5/cdt=20171002/catpartkey=others/usrpartkey=logUsers/000026_0,
size: 401517212, chunkSize: 268435456, fid: 2052.225472.4786362
17/10/23 17:26:43 DEBUG RecordReaderImpl: chunks = [range start: 67684 end:
15790993, range start: 21131541 end: 21146035]
17/10/23 17:26:43 DEBUG RecordReaderImpl: merge = [data range [67684,
15790993), size: 15723309 type: array-backed, data range [21131541, 21146035),
size: 14494 type: array-backed]
17/10/23 17:26:43 DEBUG Utilities: Hive Conf not found or Session not
initiated, use thread based class loader instead
17/10/23 17:26:43 DEBUG HadoopTableReader:
org.apache.hadoop.hive.ql.io.orc.OrcStruct$OrcStructInspector<org.apache.hadoop.hive.serde2.objectinspector.primitive.WritableStringObjectInspector@7c1bb45,org.apache.hadoop.hive.serde2.objectinspector.primitive.WritableStringObjectInspector@7c1bb45,org.apache.hadoop.hive.serde2.objectinspector.primitive.WritableStringObjectInspector@7c1bb45,org.apache.hadoop.hive.serde2.objectinspector.primitive.WritableStringObjectInspector@7c1bb45,org.apache.hadoop.hive.serde2.objectinspector.primitive.WritableStringObjectInspector@7c1bb45,org.apache.hadoop.hive.serde2.objectinspector.primitive.WritableIntObjectInspector@3fedb2fd,org.apache.hadoop.hive.serde2.objectinspector.primitive.WritableIntObjectInspector@3fedb2fd,org.apache.hadoop.hive.serde2.objectinspector.primitive.WritableStringObjectInspector@7c1bb45,org.apache.hadoop.hive.serde2.objectinspector.primitive.WritableStringObjectInspector@7c1bb45,org.apache.hadoop.hive.serde2.objectinspector.primitive.WritableIntObjectInspector@3fedb2fd,org.apache.hadoop.hive.serde2.objectinspector.primitive.WritableIntObjectInspector@3fedb2fd,org.apache.hadoop.hive.serde2.objectinspector.primitive.WritableStringObjectInspector@7c1bb45,org.apache.hadoop.hive.serde2.objectinspector.primitive.WritableStringObjectInspector@7c1bb45,org.apache.hadoop.hive.serde2.objectinspector.primitive.WritableStringObjectInspector@7c1bb45,org.apache.hadoop.hive.serde2.objectinspector.primitive.WritableIntObjectInspector@3fedb2fd,org.apache.hadoop.hive.serde2.objectinspector.primitive.WritableIntObjectInspector@3fedb2fd,org.apache.hadoop.hive.serde2.objectinspector.primitive.WritableBinaryObjectInspector@e8220d5>
17/10/23 17:26:43 DEBUG GeneratePredicate: Generated predicate '(input[1,
IntegerType] = 27)':
and here is my execution plan
== Parsed Logical Plan ==
'Limit 1000
+- 'Sort ['id DESC], true
+- 'Project [unresolvedalias('id)]
+- 'Filter (((('cdt = 20171002) && ('catpartkey = others)) && ('usrpartkey =
logUsers)) && ('cat = 27))
+- 'UnresolvedRelation `auditlogsv5`, None== Analyzed Logical Plan ==
id: string
Limit 1000
+- Sort [id#165 DESC], true
+- Project [id#165]
+- Filter ((((cdt#162 = 20171002) && (catpartkey#163 = others)) &&
(usrpartkey#164 = logUsers)) && (cat#170 = 27))
+- MetastoreRelation default, auditlogsv5, None== Optimized Logical Plan ==
Limit 1000
+- Sort [id#165 DESC], true
+- Project [id#165]
+- Filter ((((cdt#162 = 20171002) && (catpartkey#163 = others)) &&
(usrpartkey#164 = logUsers)) && (cat#170 = 27))
+- MetastoreRelation default, auditlogsv5, None== Physical Plan ==
TakeOrderedAndProject(limit=1000, orderBy=[id#165 DESC], output=[id#165])
+- ConvertToSafe
+- Project [id#165]
+- Filter (cat#170 = 27)
+- HiveTableScan [id#165,cat#170], MetastoreRelation default, logs, None,
[(cdt#162 = 20171002),(catpartkey#163 = others),(usrpartkey#164 = logUsers)]
Am I missing something here. I am on spark 1.6.1 and hive 1.2.0 please
correct me. Thank you
