Regex on Spark RDD[String] with Regex on multiline - regex

Question

I'm trying a parse a log file in Spark 1.6 using scala, here is the sample data
2017-02-04 04:48:11,123 DEBUG [org.quartz.core.QuartzSchedulerThread] - <batch acquisition of 0 triggers>
2017-02-04 04:48:20,892 INFO [org.jasig.inspektr.audit.support.Slf4jLoggingAuditTrailManager] - <Audit trail record BEGIN
=============================================================
WHO: audit:unknown
WHAT: TGT-7d937-yRqp6ObM7JOtkUZ7Ff4yEo95-casino1.example.org
ACTION: TICKET_GRANTING_TICKET_DESTROYED
APPLICATION: CASINO
WHEN: Sat Feb 04 04:48:20 AEDT 2017
CLIENT IP ADDRESS: 160.50.201.557
SERVER IP ADDRESS: login.cfu.asg
=============================================================
>
2017-02-04 04:48:32,165 INFO [org.jasig.cas.services.DefaultServicesManagerImpl] - <Reloading registered services.>
2017-02-04 04:48:32,167 INFO [org.jasig.casino.services.DefaultServicesManagerImpl] - <Loaded 2 services.>
2017-02-04 04:48:38,889 DEBUG [org.quartz.core.QuartzSchedulerThread] - <batch acquisition of 1 triggers>
2017-02-04 04:48:52,790 DEBUG [org.quartz.core.QuartzSchedulerThread] - <batch acquisition of 0 triggers>
2017-02-04 04:48:52,790 DEBUG [org.quartz.core.JobRunShell] - <Calling execute on job DEFAULT.serviceRegistryReloaderJobDetail>
2017-02-04 04:48:52,790 INFO [org.jasig.casino.services.DefaultServicesManagerImpl] - <Reloading registered services.>
2017-02-04 04:48:52,792 DEBUG [org.jasig.casino.services.DefaultServicesManagerImpl] - <Adding registered service ^(https?|imaps?)://.*>
2017-02-04 04:48:52,792 DEBUG [org.jasig.casino.services.DefaultServicesManagerImpl] - <Adding registered service
2017-02-04 04:48:52,792 INFO [org.jasig.casino.services.DefaultServicesManagerImpl] - <Loaded 2 services.>
2017-02-04 04:49:14,365 INFO [org.jasig.casino.services.DefaultServicesManagerImpl] - <Reloading registered services.>
2017-02-04 04:49:14,366 INFO [org.jasig.casino.services.DefaultServicesManagerImpl] - <Loaded 2 services.>
2017-02-04 04:49:19,699 DEBUG [org.quartz.core.QuartzSchedulerThread] - <batch acquisition of 0 triggers>
2017-02-04 04:49:43,465 DEBUG [org.quartz.core.QuartzSchedulerThread] - <batch acquisition of 0 triggers>
2017-02-04 04:50:00,978 INFO [org.jasig.casino.authentication.PolicyBasedAuthenticationManager] - <JaasAuthenticationHandler successfully authenticated >
2017-02-04 04:50:00,978 INFO [org.jasig.casino.authentication.PolicyBasedAuthenticationManager] - <Authenticated 3785973 with credentials.>
2017-02-04 04:50:00,978 INFO [org.jasig.inspektr.nhgij.support.Slf4jLogggbhAuditTrailManaver] - <Audit trail record BEGIN
=============================================================
WHO: z3705z73
WHAT: supplied credentials: [d37c5973]
ACTION: AUTHENTICATION_SUCCESS
APPLICATION: casinoINO
WHEN: Sat Feb 04 04:50:00 AEDT 2017
CLIENT IP ADDRESS: 101.181.28.555
SERVER IP ADDRESS: login.cfu.asg
=============================================================
>
And the data goes on, there can be other log data inbetween the patterns which is not relevant for my parsing though. I have about 40GB of files each contains one day's data.
All these files are gzip compressed. I tried using sc.wholeTextFiles to get a pair RDD, but running into Java heapspace errors as each file goes between 400mb to 800mb (uncompressed).
So i started using sc.textFile and experimenting with one reading one file. I can create a RDD[String], luckily sc.textFile does not return me any heapspace issues when run any action on this RDD.
Here is the code i tried.
val casinop2 = sc.wholeTextFiles("/logdata/casino/catalina.out-20150228.gz")
val casop = casinop2.flatMap(x=>x.split("\n"))
.filter(x=> !(x.contains("Reloading registered services") || x.contains("Loaded 2 services.") || x.contains("DEBUG") || x.contains("ERROR") || x.contains("java.lang.RuntimeException") || x.contains("Caused by:") || x.contains("Granted ticket") || x.contains("java.lang.IllegalStateException") || x.startsWith("\t") || x.contains("org.jasig.cas.authentication.PolicyBasedAuthenticationManager") ))
val pattern = new Regex("""((\d{4})-(\d{2})-\d{2}\s\d{2}:\d{2}:\d{2}),\d{3}\s+(\w+)\s+\[(.*)\]\s+\-\s+\<.*\s\=*\s+([W][H][O]\:)\s+(.*)\s+([W][H][A][T]\:)\s+(.*)\s+([A][C][T][I][O][N]\:)\s+(.*)\s+([A][P][P][L][I][C][A][T][I][O][N]\:)\s+(.*)\s+([W][H][E][N]\:)\s+(.*)\s+([A-Z\s]{17}\:)\s+(.*)\s+([A-Z\s]{17}\:)\s+(.*)\s+\=*\s\s\>""")
pattern: scala.util.matching.Regex = ((\d{4})-(\d{2})-\d{2}\s\d{2}:\d{2}:\d{2}),\d{3}\s+(\w+)\s+\[(.*)\]\s+\-\s+\<.*\s\=*\s+([W][H][O]\:)\s+(.*)\s+([W][H][A][T]\:)\s+(.*)\s+([A][C][T][I][O][N]\:)\s+(.*)\s+([A][P][P][L][I][C][A][T][I][O][N]\:)\s+(.*)\s+([W][H][E][N]\:)\s+(.*)\s+([A-Z\s]{17}\:)\s+(.*)\s+([A-Z\s]{17}\:)\s+(.*)\s+\=*\s\s\>
case class MLog(datetime: String, message: String, process: String, who: String, what: String, action: String, application: String, when: String, clientipaddress: String, serveripaddress: String,year: String, month: String)
pattern.findAllMatchIn(casop.collect.toString).toList
Now the last statement throws me heapspace error. The reason i want rdd into a string variable is regex needs multi line input, not single line. For single line, i would use map, flatmap etc.
The output i should get from the log file should be
|2017-02-04 04:54:41| INFO|org.jasig.inspekt...| s4542732|supplied credenti...|AUTHENTICATION_SU...| CAS|Sat Feb 04 04:54:...| 175.163.28.77|login.vu.edu.au|2017| 02|
|2017-02-04 04:54:41| INFO|org.jasig.inspekt...| s4542732|TGT-78959-EX63Wf2...|TICKET_GRANTING_T...| CAS|Sat Feb 04 04:54:...| 175.163.28.77|login.vu.edu.au|2017| 02|
|2017-02-04 04:54:41| INFO|org.jasig.inspekt...| 4542732|ST-474481-jTxCJFB...|SERVICE_TICKET_CR...| CAS|Sat Feb 04 04:54:...| 175.163.28.77|login.vu.edu.au|2017| 02|
|2017-02-04 04:54:44| INFO|org.jasig.inspekt...|audit:unknown|ST-474481-jTxCJFB...|SERVICE_TICKET_VA...| CAS|Sat Feb 04 04:54:...| 203.13.194.68|login.vu.edu.au|2017| 02|
|2017-02-04 04:55:02| INFO|org.jasig.inspekt...| s3785573|supplied credenti...|AUTHENTICATION_SU...| CAS|Sat Feb 04 04:55:...| 101.181.28.125|login.vu.edu.au|2017| 02|
|2017-02-04 04:55:02| INFO|org.jasig.inspekt...| s3785573|TGT-78960-yWaWkcN...|TICKET_GRANTING_T...| CAS|Sat Feb 04 04:55:...| 101.181.28.125|login.vu.edu.au|2017| 02|
|2017-02-04 04:55:02| INFO|org.jasig.inspekt...| 3785573|ST-474482-rARxdUG...|SERVICE_TICKET_CR...| CAS|Sat Feb 04 04:55:...| 101.181.28.125|login.vu.edu.au|2017| 02|
|2017-02-04 04:55:02| INFO|org.jasig.inspekt...|audit:unknown|ST-474482-rARxdUG...|SERVICE_TICKET_VA...| CAS|Sat Feb 04 04:55:...| 203.13.194.68|login.vu.edu.au|2017| 02|
+-------------------+-------+--------------------+-------------+--------------------+--------------------+-----------+--------------------+---------------+---------------+----+-----+
How can we read a multiline input and feed to regex?

Answer 1

I have fixed and improved your regex and it should work now for your last logs that are on several lines:
The regex is the following beast:
(\d{4}-\d{2}-\d{2}\s\d{2}:\d{2}:\d{2}),\d{3}\s+(\w+)\s+\[(.*)\]\s+\-\s+<[^>]*\s\=*\s+WHO\:\s+([^>\n]*)\s+WHAT\:\s+([^>\n]*)\s+ACTION\:\s+([^>\n]*)\s+APPLICATION\:\s+([^>\n]*)\s+WHEN\:\s+([^>\n]*)\s+([A-Z\s]{17}\:)\s+([^>\n]*)\s+([A-Z\s]{17}\:)\s+([^>\n]*)\s+\=*\s\s>
I have tried it with your logs by using the following replacement pattern that you should adapt depending on your exact needs:
\1 | \2 | \3 | WHO:\4 | WHAT: \5 | ACTION: \6 | APPLICATION: \7 | WHEN: \8 | \9 $10 | $11 $12
Here is the result:
Last but not least, you might have to change your heapsize: --executor-memory 10g