Spark RDD [String]上的正则表达式，多行上的正则表达式

Question

我正在尝试使用Scala在Spark 1.6中解析日志文件，这是示例数据

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
=============================================================

>

数据继续运行，这些模式之间可能还有其他日志数据，但这与我的解析无关。 我大约有40GB的文件，每个文件包含一天的数据。

所有这些文件都是gzip压缩的。 我尝试使用sc.wholeTextFiles来获取一对RDD，但是由于每个文件的大小在400mb至800mb之间（未压缩），因此遇到Java堆空间错误。

所以我开始使用sc.textFile并尝试一种读取一个文件。 我可以创建一个RDD [String]，幸运的是，在此RDD上执行任何操作时，sc.textFile不会返回任何堆空间问题。

这是我尝试的代码。

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+([AZ\\s]{17}\\:)\\s+(.*)\\s+([AZ\\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+([AZ\\s]{17}\\:)\\s+(.*)\\s+([AZ\\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

现在，最后一条语句向我抛出了堆空间错误。 我想将rdd转换为字符串变量的原因是正则表达式需要多行输入，而不是单行。 对于单行，我将使用地图，平面地图等。

我应该从日志文件中获得的输出应该是

|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|
+-------------------+-------+--------------------+-------------+--------------------+--------------------+-----------+--------------------+---------------+---------------+----+-----+

我们如何读取多行输入并提供给正则表达式？

Answer 1

我已经修复并改进了您的正则表达式，它现在应该可以用于多行的最后一个日志：

正则表达式是以下野兽：

(\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>

我已经通过使用以下替换模式对您的日志进行了尝试，您应该根据自己的实际需要对其进行调整：

\1 | \2 | \3 | WHO:\4 | WHAT: \5 | ACTION: \6 | APPLICATION: \7 | WHEN: \8 | \9  $10 | $11  $12

结果如下：

最后但并非最不重要的一点是，您可能必须更改堆大小： --executor-memory 10g executor --executor-memory 10g