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6c12546561
Before this change, the per-host reservation size was computed by the Planner. However, scheduling happens after planning, so the Planner must assume that all fragments run on all hosts, and the reservation size is likely much larger than it needs to be. This moves the computation of the per-host reservation size to the BE where it can be computed more precisely. This also includes a number of plan/profile changes. Change-Id: Idbcd1e9b1be14edc4017b4907e83f9d56059fbac Reviewed-on: http://gerrit.cloudera.org:8080/7630 Reviewed-by: Matthew Jacobs <mj@cloudera.com> Tested-by: Impala Public Jenkins
39 lines
1.2 KiB
Plaintext
39 lines
1.2 KiB
Plaintext
====
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---- QUERY
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# Explain a simple hash join query.
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explain
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select *
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from tpch.lineitem join tpch.orders on l_orderkey = o_orderkey;
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---- RESULTS: VERIFY_IS_EQUAL
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'Max Per-Host Resource Reservation: Memory=34.00MB'
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'Per-Host Resource Estimates: Memory=476.41MB'
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''
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'PLAN-ROOT SINK'
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'|'
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'04:EXCHANGE [UNPARTITIONED]'
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'|'
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'02:HASH JOIN [INNER JOIN, BROADCAST]'
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'| hash predicates: l_orderkey = o_orderkey'
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'| runtime filters: RF000 <- o_orderkey'
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'|'
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'|--03:EXCHANGE [BROADCAST]'
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'| |'
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'| 01:SCAN HDFS [tpch.orders]'
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row_regex:.*partitions=1/1 files=1 size=.*
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'|'
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'00:SCAN HDFS [tpch.lineitem]'
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row_regex:.*partitions=1/1 files=1 size=.*
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' runtime filters: RF000 -> l_orderkey'
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====
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---- QUERY
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# Tests the warning about missing table stats in the explain header.
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explain select count(t1.int_col), avg(t2.float_col), sum(t3.bigint_col)
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from functional_avro.alltypes t1
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inner join functional_parquet.alltypessmall t2 on (t1.id = t2.id)
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left outer join functional_avro.alltypes t3 on (t2.id = t3.id)
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where t1.month = 1 and t2.year = 2009 and t3.bool_col = false
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---- RESULTS: VERIFY_IS_SUBSET
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'WARNING: The following tables are missing relevant table and/or column statistics.'
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'functional_avro.alltypes, functional_parquet.alltypessmall'
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====
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