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https://issues.apache.org/jira/browse/HIVE-8396?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15006564#comment-15006564
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Elliot West commented on HIVE-8396:
-----------------------------------
I note that in {{org.apache.hadoop.hive.cli.CliDriver}} the following code
strips full line comments from the input script:
{code}
public int processReader(BufferedReader r) throws IOException {
String line;
StringBuilder qsb = new StringBuilder();
while ((line = r.readLine()) != null) {
// Skipping through comments
if (! line.startsWith("--")) {
qsb.append(line + "\n");
}
}
return (processLine(qsb.toString()));
}
{code}
Can we not also do this in the shell input processor? Also, what does
{{beeline}} do?
> Hive CliDriver command splitting can be broken when comments are present
> ------------------------------------------------------------------------
>
> Key: HIVE-8396
> URL: https://issues.apache.org/jira/browse/HIVE-8396
> Project: Hive
> Issue Type: Bug
> Components: Parser, Query Processor
> Affects Versions: 0.14.0
> Reporter: Sergey Shelukhin
>
> {noformat}
> -- SORT_QUERY_RESULTS
> set hive.cbo.enable=true;
> ... commands ...
> {noformat}
> causes
> {noformat}
> 2014-10-07 18:55:57,193 ERROR ql.Driver (SessionState.java:printError(825)) -
> FAILED: ParseException line 2:4 missing KW_ROLE at 'hive' near 'hive'
> {noformat}
> If the comment is moved after the command it works.
> I noticed this earlier when I comment out parts of some random q file for
> debugging purposes, and it starts failing. This is annoying.
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