Details
-
Improvement
-
Status: Open
-
Major
-
Resolution: Unresolved
-
Impala 2.9.0
-
None
-
ghx-label-4
Description
Parquet file for sample data attached.
From the query profile
CodeGen:(Total: 3m6s, non-child: 3m6s, % non-child: 100.00%)
- CodegenTime: 73.408ms
- CompileTime: 48s511ms
- LoadTime: 0.000ns
- ModuleBitcodeSize: 1.98 MB (2074600)
- NumFunctions: 2.07K (2066)
- NumInstructions: 104.95K (104948)
- OptimizationTime: 2m17s
- PeakMemoryUsage: 51.24 MB (53733376)
- PrepareTime: 18.414ms
AGGREGATION_NODE (id=2):(Total: 3s413ms, non-child: 408.959us, % non-child: 0.01%)
- BuildTime: 775.000ns
- GetResultsTime: 0.000ns
- HTResizeTime: 0.000ns
- HashBuckets: 0 (0)
- LargestPartitionPercent: 0 (0)
- MaxPartitionLevel: 0 (0)
- NumRepartitions: 0 (0)
- PartitionsCreated: 0 (0)
- PeakMemoryUsage: 16.00 KB (16384)
- RowsRepartitioned: 0 (0)
- RowsReturned: 1 (1)
- RowsReturnedRate: 0
Query used to repro
select count(*) from (select distinct * from wide_parquet_1000_small where l_orderkey = 10) a
Hot functions from Perf
Samples: 2M of event 'cycles', Event count (approx.): 1538632554190 + 6.09% 6.07% impalad impalad [.] llvm::ScalarEvolution::hasâ—† + 5.75% 0.00% impalad [unknown] [.] 0000000000000000 + 5.46% 0.00% impalad [unknown] [.] 0x00007f8dfe242120 + 5.21% 0.00% impalad [unknown] [.] 0x00007f8e5e13ea20 + 4.31% 0.00% impalad [unknown] [.] 0x00007f8e5e13e8e8 + 4.31% 0.00% init [kernel.kallsyms] [k] start_secondary + 4.30% 0.02% init [kernel.kallsyms] [k] cpu_idle + 4.03% 0.00% impalad [unknown] [.] 0x00007f8dfe241fe8 + 3.79% 3.77% impalad impalad [.] llvm::Use::getImpliedUser( + 3.65% 0.02% init [kernel.kallsyms] [k] cpuidle_idle_call + 3.26% 2.78% impalad impalad [.] llvm::MemoryDependenceAnal + 3.17% 3.15% impalad impalad [.] llvm::SmallPtrSetImplBase: + 2.56% 2.52% impalad impalad [.] llvm::ScalarEvolution::get + 2.51% 0.00% impalad [kernel.kallsyms] [k] system_call_fastpath + 2.20% 2.19% impalad impalad [.] llvm::SmallPtrSetImplBase: + 2.17% 2.17% impalad impalad [.] llvm::MemoryDependenceAnal + 2.06% 2.04% impalad impalad [.] llvm::AssumptionCache::sca + 1.97% 0.38% impalad [kernel.kallsyms] [k] page_fault + 1.95% 1.91% impalad impalad [.] llvm::BasicAAResult::alias + 1.93% 1.88% impalad impalad [.] llvm::ScalarEvolution::For + 1.91% 1.84% init [kernel.kallsyms] [k] intel_idle + 1.78% 1.77% impalad impalad [.] llvm::Attribute::hasAttrib + 1.72% 0.72% impalad impalad [.] operator delete[](void*, s + 1.71% 1.71% impalad impalad [.] llvm::BasicAAResult::alias + 1.69% 1.02% impalad impalad [.] operator new[](unsigned lo + 1.67% 1.67% impalad impalad [.] LZ4_compress_fast_extState + 1.60% 0.00% impalad [unknown] [.] 0x2000000000000001 + 1.59% 0.01% impalad [kernel.kallsyms] [k] do_page_fault + 1.58% 0.03% impalad [kernel.kallsyms] [k] __do_page_fault + 1.58% 1.53% impalad impalad [.] llvm::ScalarEvolution::for + 1.55% 0.00% impalad [unknown] [.] 0x0000000000000001 + 1.45% 0.05% impalad [kernel.kallsyms] [k] handle_mm_fault + 1.43% 1.35% impalad impalad [.] llvm::MemoryDependenceAnal + 1.40% 0.04% impalad [kernel.kallsyms] [k] handle_pte_fault + 1.35% 0.37% impalad libc-2.12.so [.] __memset_sse2 + 1.29% 0.00% init [kernel.kallsyms] [k] irq_exit + 1.27% 1.26% impalad impalad [.] llvm::Value::stripPointerC + 1.25% 1.25% impalad impalad [.] llvm::LiveVariables::addNe + 1.23% 0.00% init [kernel.kallsyms] [k] do_softirq + 1.23% 0.00% init [kernel.kallsyms] [k] call_softirq + 1.22% 0.01% init [kernel.kallsyms] [k] __do_softirq + 1.18% 1.18% impalad impalad [.] llvm::AttributeSet::getAtt + 1.15% 0.59% impalad impalad [.] tcmalloc::ThreadCache::Rel + 1.07% 0.00% impalad [unknown] [.] 0x00007f8d3814b960 + 1.07% 0.00% impalad [unknown] [.] 0x00007f8d3774a960 + 1.05% 1.05% impalad impalad [.] llvm::AttributeSetNode::ha + 1.04% 0.00% impalad [unknown] [.] 0x00007f8dfe242138
DDL
CREATE TABLE scan_primitives_tpch_3tb.wide_parquet_1000_small (
l_orderkey BIGINT,
l_partkey BIGINT,
l_suppkey BIGINT,
l_linenumber BIGINT,
l_quantity DOUBLE,
l_extendedprice DOUBLE,
l_discount DOUBLE,
l_tax DOUBLE,
l_returnflag STRING,
l_linestatus STRING,
l_commitdate STRING,
l_receiptdate STRING,
l_shipinstruct STRING,
l_shipmode STRING,
l_comment STRING,
l_shipdate STRING,
c1 STRING,
c2 STRING,
c3 STRING,
c4 STRING,
c5 STRING,
c6 STRING,
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c878 STRING,
c879 STRING,
c880 STRING,
c881 STRING,
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c1000 STRING
)
STORED AS PARQUET
LOCATION '/user/hive/warehouse/scan_primitives_tpch_3tb.db/wide_parquet_1000_small'
Attachments
Attachments
Issue Links
- relates to
-
IMPALA-4397 Codegen for compute stats query on 1K column table takes 4 minutes
-
- Resolved
-
-
-
- Resolved
-