sbt usc6k

Zhangchangchang 1, the order-bound Erl +SBT db is bound to the scheduler in the order from the front to the back, such as: Erl +SBT db +s 3 meaning is to start the Erlang virtual machine, open 3 Scheduler, in order to bind on the 0,1,2 number of cores. 2, random binding using the Taskset command, taskset-c 1,3,5 erl +s 3: The meaning is to start 3 scheduler Erlang virtual machine, 3 schedulers are bound to

/snapcf_u02.f '; Iv. setting up parallel backupsRman supports parallel backup and recovery, or it can specify the default degree of parallelism in the configuration. Such asCONFIGURE DEVICE TYPE DISK PARALLELISM 4;Specifies that in future backup and recovery, the degree of parallelism will be 4 and 4 channels should be turned on for backup and recovery, or the channel can be specified in the run block to determine the level of parallelism between backup and recovery.The number of parallel number

consistency of the file, which can be configured with the following CONFIGURE SNAPSHOT Controlfile NAME to '/u01/app/oracle/product/9.0.2/dbs/snapcf_u02.f '; 3.4 Setting up a parallel backup Rman supports parallel backup and recovery, or it can specify the default degree of parallelism in the configuration. Such as CONFIGURE DEVICE TYPE DISK PARALLELISM 4; Specifies that in future backup and recovery, the degree of parallelism will be 4 and 4 channels should be turned on for backup and re

{ val compress_cached = "Spark.sql.inMemoryColumnarStorage.compressed" Val Column_batch_size = "Spark.sql.inMemoryColumnarStorage.batchSize" val default_size_in_bytes = " Spark.sql.defaultSizeInBytes "Go back to case class Inmemoryrelation:_cachedcolumnbuffers is the storage handle that we finally put the table into memory, which is a rdd[array[bytebuffer].Cache main Process:1, determine whether _cachedcolumnbuffers is null, if not NULL, the current table has been cache, repeat cache does n

correctly during the previous startup of this database.Hence the semaphores and shared memory segments is not getting detached properly now during shutdown.If you encounter this problem later, you can use the following steps to process:1. Verify that there is no background processes owned by "Oracle", if there is kill them$ PS-EF | grep Ora_ | grep $ORACLE _sid2. Remove shared memory and semaphores:A) Check for shared memory and semaphores$ IPCS-MT (if there is anything owned by Oracle remove i

. Spark compilation is still very simple. Most of the causes of all failures can be attributed to the failure to download the dependent jar package. To enable spark 1.0 to support hadoop 2.4.0 and hive, use the following command to compile SPARK_HADOOP_VERSION=2.4.0 SPARK_YARN=true SPARK_HIVE=true sbt/sbt assembly If everything goes well, it will be generated under the Assembly directory.Spark-assembly-1.

Iv. Backup with RMANRMAN can be used to back up primary or backup databases, such as tablespaces, data files, archived logs, control files, and services.File and backup set.94.1 copy a fileThe copy of the original file is a bit similar to OS hot backup. You can copy the entire data file to another location,The results are only written to the hard disk, and separate files are separated.Example of copying a fileRun {Allocate channel D1 type disk;Allocate channel D2 type disk;Allocate channel D3 ty

or address ./Orclarch_000094163.arc: no such device or address ./Orclarch_000094164.arc: no such device or address ....... ./Orclarch_rj94159.arc: no such device or address ./Orclarch_000094160.arc: no such device or address ./Orclarch_000094161.arc: no such device or address Total 20480 -RW ------ T 0 root other 10485760 Apr 26 orclarch_1_94141.arc The file name can be seen, the content is gone, and the archive logs are all damaged.This is because a level-0 backup was made to the database befo

and manage backups on disks and tapes, back up backups originally created on disks and tapes, and restore database files from backups. Devices used for tape backup often reference SBT devices. Rman interacts with SBT devices through media management layer1.5.2.1. Types of Oracle Database Backup under RMANIn physical backup, there are several differences:(1) About Consistent and Inconsistent BackupsPhysical

\ DATABASE \ SNCFBACK. ORA '; # default Introduction ParametersConfigure retention policy to recovery window of 3 DAYS;-- Backup policy, which retains the backup for three daysConfigure retention policy to redundancy 7;-- Backup policy, retain 7 backupsThe two backup policies can only take one of them and cannot coexist. Configure backup optimization on;-- The backup is optimized and enabled. I don't know why oracle is not enabled by default.Configure default device type to disk; # default-- Th

check the image copy of a specific data file;4.12. RMAN> crosscheck copy of archivelog sequence 4. Check the image copy of the archived log;4.13. RMAN> crosscheck copy of controlfile: Check the image copy of the control file;4.14. RMAN> crosscheck backup tag = 'sat _ backup ';4.15. RMAN> crosscheck backup completed after 'sysdate-2'4.16. RMAN> crosscheck backup completed between 'sysdate-5' and 'sysdate-2'4.17. RMAN> crosscheck backup device type SBT

analysis" technology provides software testing teams with a more rational approach to automated testing, especially in the field of regression test sets. Understand how CTA improves your testing efficiency. "Cross-platform automated regression testing based on rft and staf without manual intervention" (developerworks, August 2008): This article combines rational functional tester (rft) with the degree of automation of regression testing) perform cross-platform concurrent automated regression t

neighbor pointing to each point, triplet => iterator (triplet. srcid, map [String, int] (triplet. dstattr. _ 2-> 1), // map function one-way sends a message to the Source Vertex (A, B) with the directed edge) ==>{ // reduce function collects the message var mymap = map [String, int] () for (K, v) Users.txt vertex data: ID, name, Region 1,BarackObama,American2,ladygaga,American3,John,American4,xiaoming,Beijing6,Hanmeimei,Beijing7,Polly,American8,Tom,American Followers.txt Edge Data: only sou

The following error is reported after the backup definition is modified.OB2BARLIST is the correct solution with the library ID. Incorrect:Allocate channel 'dev _ 4' type 'sbt _ tape 'parm' ENV = (OB2BARTYPE = Oracle8, OB2APPNAME = syprd, OB2BARLIST = backup_full )'; Correct:Allocate channel 'dev _ 0' type 'sbt _ tape 'parm' ENV = (OB2BARTYPE = Oracle8, OB2APPNAME = syprd, OB2BARLIST = Backup_Delete_Archiv

piece of data stream in DStream.2.2.2.2 Advanced SourcesThis type of source requires an interface to an external Non-spark library, some of which have complex dependencies (such as Kafka, Flume). Therefore, creating dstreams from these sources requires a clear dependency. For example, if you want to create a dstream stream of data that uses Twitter tweets, you must follow these steps:1) Add spark-streaming-twitter_2.10 dependency in SBT or Maven proj