[
https://issues.apache.org/jira/browse/ASTERIXDB-2949?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Ali Alsuliman updated ASTERIXDB-2949:
-------------------------------------
Description: SUBSTR function may produce a malformed string. SUBSTR
function uses a string builder to construct the output substring. Before
constructing the string, it gives an estimated length of the output substring
to the string builder, and then starts writing out the substring data to the
builder buffer. If the actual data written exceeds the estimated length by an
amount that requires the builder buffer to make more space to encode the actual
length and shift the substring content, the resulting content gets malformed
which might lead to failures up in the stack.
> SUBSTR function may produce malformed string
> --------------------------------------------
>
> Key: ASTERIXDB-2949
> URL: https://issues.apache.org/jira/browse/ASTERIXDB-2949
> Project: Apache AsterixDB
> Issue Type: Bug
> Components: FUN - Functions, RT - Runtime
> Affects Versions: 0.9.3
> Reporter: Ali Alsuliman
> Assignee: Ali Alsuliman
> Priority: Major
> Fix For: 0.9.8
>
>
> SUBSTR function may produce a malformed string. SUBSTR function uses a string
> builder to construct the output substring. Before constructing the string, it
> gives an estimated length of the output substring to the string builder, and
> then starts writing out the substring data to the builder buffer. If the
> actual data written exceeds the estimated length by an amount that requires
> the builder buffer to make more space to encode the actual length and shift
> the substring content, the resulting content gets malformed which might lead
> to failures up in the stack.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
