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https://issues.apache.org/jira/browse/OOZIE-2457?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Satish Subhashrao Saley updated OOZIE-2457:
-------------------------------------------
Attachment: OOZIE-2457-2.patch
> Oozie log parsing regex consume more than 90% cpu
> -------------------------------------------------
>
> Key: OOZIE-2457
> URL: https://issues.apache.org/jira/browse/OOZIE-2457
> Project: Oozie
> Issue Type: Bug
> Reporter: Satish Subhashrao Saley
> Assignee: Satish Subhashrao Saley
> Priority: Minor
> Attachments: OOZIE-2457-1.patch, OOZIE-2457-2.patch
>
>
> http-0.0.0.0-4080-26 TID=62215 STATE=RUNNABLE CPU_TIME=1992 (92.59%)
> USER_TIME=1990 (92.46%) Allocted: 269156584
> java.util.regex.Pattern$Curly.match0(Pattern.java:4170)
> java.util.regex.Pattern$Curly.match(Pattern.java:4132)
> java.util.regex.Pattern$GroupHead.match(Pattern.java:4556)
> java.util.regex.Matcher.match(Matcher.java:1221)
> java.util.regex.Matcher.matches(Matcher.java:559)
> org.apache.oozie.util.XLogFilter.matches(XLogFilter.java:136)
>
> org.apache.oozie.util.TimestampedMessageParser.parseNextLine(TimestampedMessageParser.java:145)
>
> org.apache.oozie.util.TimestampedMessageParser.increment(TimestampedMessageParser.java:92)
> Regex
> {code}
> (.* USER\[[^\]]*\] GROUP\[[^\]]*\] TOKEN\[[^\]]*\] APP\[[^\]]*\]
> JOB\[0000000-150625114739728-oozie-puru-W\] ACTION\[[^\]]*\] .*)
> {code}
> For single line parsing we use two regex.
> 1.
> {code}
> public ArrayList<String> splitLogMessage(String logLine) {
> Matcher splitter = SPLITTER_PATTERN.matcher(logLine);
> if (splitter.matches()) {
> ArrayList<String> logParts = new ArrayList<String>();
> logParts.add(splitter.group(1));// timestamp
> logParts.add(splitter.group(2));// log level
> logParts.add(splitter.group(3));// Log Message
> return logParts;
> }
> else {
> return null;
> }
> }
> {code}
> 2.
> {code}
> public boolean matches(ArrayList<String> logParts) {
> if (getStartDate() != null) {
> if (logParts.get(0).substring(0,
> 19).compareTo(getFormattedStartDate()) < 0) {
> return false;
> }
> }
> String logLevel = logParts.get(1);
> String logMessage = logParts.get(2);
> if (this.logLevels == null ||
> this.logLevels.containsKey(logLevel.toUpperCase())) {
> Matcher logMatcher = filterPattern.matcher(logMessage);
> return logMatcher.matches();
> }
> else {
> return false;
> }
> }
> {code}
> Also there is repetitive parsing for same log message in
> {code}
> private String parseTimestamp(String line) {
> String timestamp = null;
> ArrayList<String> logParts = filter.splitLogMessage(line);
> if (logParts != null) {
> timestamp = logParts.get(0);
> }
> return timestamp;
> }
> {code}
> where the {{line}} has already parsed using regex and we already know the
> {{logParts}} if any.
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