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https://issues.apache.org/jira/browse/HBASE-6991?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13491751#comment-13491751
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Aditya Kishore commented on HBASE-6991:
---------------------------------------
[~yuzhih...@gmail.com], [~stack] Could you please review this.
https://reviews.apache.org/r/7632/
> Escape "\" in Bytes.toStringBinary() and its counterpart Bytes.toBytesBinary()
> ------------------------------------------------------------------------------
>
> Key: HBASE-6991
> URL: https://issues.apache.org/jira/browse/HBASE-6991
> Project: HBase
> Issue Type: Bug
> Components: util
> Affects Versions: 0.96.0
> Reporter: Aditya Kishore
> Assignee: Aditya Kishore
> Fix For: 0.96.0
>
> Attachments: HBASE-6991_trunk.patch
>
>
> Since "\" is used to escape non-printable character but not treated as
> special character in conversion, it could lead to unexpected conversion.
> For example, please consider the following code snippet.
> {code}
> public void testConversion() {
> byte[] original = {
> '\\', 'x', 'A', 'D'
> };
> String stringFromBytes = Bytes.toStringBinary(original);
> byte[] converted = Bytes.toBytesBinary(stringFromBytes);
> System.out.println("Original: " + Arrays.toString(original));
> System.out.println("Converted: " + Arrays.toString(converted));
> System.out.println("Reversible?: " + (Bytes.compareTo(original, converted)
> == 0));
> }
> Output:
> -------
> Original: [92, 120, 65, 68]
> Converted: [-83]
> Reversible?: false
> {code}
> The "\" character needs to be treated as special and must be encoded as a
> non-printable character ("\x5C") to avoid any kind of ambiguity during
> conversion.
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