[arrow] branch master updated: ARROW-15467: [Go][Parquet] Fix pqarrow decimal tests on s390x

[yibocai]

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in repository https://gitbox.apache.org/repos/asf/arrow.git


The following commit(s) were added to refs/heads/master by this push:
     new 09e4a5e  ARROW-15467: [Go][Parquet] Fix pqarrow decimal tests on s390x
09e4a5e is described below

commit 09e4a5e04c9e39169b5264e0aa98a5cf0945ecba
Author: Matthew Topol <mto...@factset.com>
AuthorDate: Thu Jan 27 13:10:13 2022 +0000

    ARROW-15467: [Go][Parquet] Fix pqarrow decimal tests on s390x
    
    Closes #12272 from zeroshade/arrow-15467-s390x-tests
    
    Authored-by: Matthew Topol <mto...@factset.com>
    Signed-off-by: Yibo Cai <yibo....@arm.com>
---
 go/parquet/internal/testutils/random.go | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/go/parquet/internal/testutils/random.go 
b/go/parquet/internal/testutils/random.go
index 9d41863..1c6cf6e 100644
--- a/go/parquet/internal/testutils/random.go
+++ b/go/parquet/internal/testutils/random.go
@@ -19,6 +19,7 @@
 package testutils
 
 import (
+       "encoding/binary"
        "math"
        "time"
        "unsafe"
@@ -26,6 +27,7 @@ import (
        "github.com/apache/arrow/go/v7/arrow"
        "github.com/apache/arrow/go/v7/arrow/array"
        "github.com/apache/arrow/go/v7/arrow/bitutil"
+       "github.com/apache/arrow/go/v7/arrow/endian"
        "github.com/apache/arrow/go/v7/arrow/memory"
        "github.com/apache/arrow/go/v7/parquet"
        "github.com/apache/arrow/go/v7/parquet/pqarrow"
@@ -448,6 +450,14 @@ func RandomDecimals(n int64, seed uint64, precision int32) 
[]byte {
                if out[start+int(nreqBytes)-1]&byte(0x80) != 0 {
                        memory.Set(out[start+int(nreqBytes):start+byteWidth], 
0xFF)
                }
+
+               // byte swap for big endian
+               if endian.IsBigEndian {
+                       for j := 0; j+8 <= byteWidth; j += 8 {
+                               v := binary.LittleEndian.Uint64(out[start+j : 
start+j+8])
+                               
binary.BigEndian.PutUint64(out[start+j:start+j+8], v)
+                       }
+               }
        }
        return out
 }