Richard Whitcomb created ARROW-7104:
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Summary: [Go] Unable to Resize/Reserve more space on ListBuilder
after init
Key: ARROW-7104
URL: https://issues.apache.org/jira/browse/ARROW-7104
Project: Apache Arrow
Issue Type: Bug
Environment: mac
Reporter: Richard Whitcomb
When using the ListBuilder unless I reserve enough capacity on the initialize
resize/init call I run into. Based on the code I would expect to be able to
grow the list builder after the initial call to reserve capacity.
{code:java}
panic: runtime error: index out of range [33] with length 33 [recovered]panic:
runtime error: index out of range [33] with length 33 [recovered] panic:
runtime error: index out of range [33] with length 33
github.com/apache/arrow/go/arrow/array.(*Int32Builder).UnsafeAppend(...)github.com/apache/arrow/go/arrow/array.(*Int32Builder).UnsafeAppend(...)
external/com_github_apache_arrow/go/arrow/array/numericbuilder.gen.go:479github.com/apache/arrow/go/arrow/array.(*Int32Builder).Append(0xc0000d3b00,
0x21)
external/com_github_apache_arrow/go/arrow/array/numericbuilder.gen.go:469
+0xa9github.com/apache/arrow/go/arrow/array.(*ListBuilder).appendNextOffset(0xc0000d3b60)
external/com_github_apache_arrow/go/arrow/array/list.go:152
+0x4fgithub.com/apache/arrow/go/arrow/array.(*ListBuilder).Append(0xc0000d3b60,
0xc0000d0001) external/com_github_apache_arrow/go/arrow/array/list.go:158 +0x90
{code}
Where the default slice size in the builders is 32.
If I print out the capacity and length of the builder I do see it grow as
expected prior to this error. My best guess is that while the capacity on the
value builder is growing the resize calls aren't making its way to the offset
int32 builder which is why you see that in the above stack.
{code:java}
Cap()=64 Len()=32{code}
I am using tag *apache-arrow-0.15.1*
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