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https://issues.apache.org/jira/browse/NUTCH-2868?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17361224#comment-17361224
]
ASF GitHub Bot commented on NUTCH-2868:
---------------------------------------
lewismc commented on a change in pull request #649:
URL: https://github.com/apache/nutch/pull/649#discussion_r649525019
##########
File path:
src/plugin/urlnormalizer-protocol/src/java/org/apache/nutch/net/urlnormalizer/protocol/ProtocolURLNormalizer.java
##########
@@ -82,15 +82,21 @@ private synchronized void readConfiguration(Reader
configReader) throws IOExcept
String line, host;
String protocol;
int delimiterIndex;
+ int lineNumber = 0;
while ((line = reader.readLine()) != null) {
+ lineNumber++;
if (StringUtils.isNotBlank(line) && !line.startsWith("#")) {
line = line.trim();
delimiterIndex = line.indexOf(" ");
// try tabulator
if (delimiterIndex == -1) {
delimiterIndex = line.indexOf("\t");
}
+ if (delimiterIndex == -1) {
+ LOG.warn("Invalid line {} without delimiter: {}", lineNumber, line);
Review comment:
How exactly do I trigger this warning? Can you provide an example or a
trivial unit test?
##########
File path:
src/plugin/urlnormalizer-protocol/src/java/org/apache/nutch/net/urlnormalizer/protocol/ProtocolURLNormalizer.java
##########
@@ -177,6 +183,7 @@ public void setConf(Configuration conf) {
if (reader == null) {
Path path = new Path(file);
FileSystem fs = path.getFileSystem(conf);
+ LOG.info("Reading {} rules file {} from {}", pluginName, file, fs);
Review comment:
Logging the `fs` object results in a log entry
```
2021-06-10 10:51:00,072 INFO protocol.ProtocolURLNormalizer
(ProtocolURLNormalizer.java:setConf(186)) - Reading urlnormalizer-protocol
rules file
/Users/lmcgibbn/Downloads/nutch/build/urlnormalizer-protocol/test/data/broken_protocols.txt
from org.apache.hadoop.fs.LocalFileSystem@e54303
```
Is the `LocalFileSystem@e54303` object reference useful?
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> urlnormalizer-protocol fails with StringIndexOutOfBoundsException when
> reading invalid line in configuration file
> -----------------------------------------------------------------------------------------------------------------
>
> Key: NUTCH-2868
> URL: https://issues.apache.org/jira/browse/NUTCH-2868
> Project: Nutch
> Issue Type: Bug
> Components: plugin, urlnormalizer
> Affects Versions: 1.18
> Reporter: Sebastian Nagel
> Priority: Minor
> Fix For: 1.19
>
>
> When reading a invalid line in the configuration file, the protocol
> urlnormalizer may fail with a StringIndexOutOfBoundsException:
> {noformat}
> 2021-06-10 05:10:41,877 WARN [main] org.apache.hadoop.mapred.YarnChild:
> Exception running child : java.lang.StringIndexOutOfBoundsException: String
> index out of range: -1
> at java.lang.String.substring(String.java:1967)
> at
> org.apache.nutch.net.urlnormalizer.protocol.ProtocolURLNormalizer.readConfiguration(ProtocolURLNormalizer.java:95)
> at
> org.apache.nutch.net.urlnormalizer.protocol.ProtocolURLNormalizer.setConf(ProtocolURLNormalizer.java:182)
> {noformat}
> The invalid line should be logged and skipped without causing the job to fail.
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