@RequestMapping(value = "/user?${id}", method = RequestMethod.GET) public ResponseEntity getUser(@PathVariable Long id) { User user = ...; if (user != null) { return new ResponseEntity(user, HttpStatus.OK); } return new ResponseEntity(HttpStatus.NOT_FOUND); } https://stackoverrun.com/ko/q/6166428 spring - 스프링 컨트롤러에서 상태를 찾을 수 없음을 반환하는 방법 다음 스프링 컨트롤러 코드가 있으며 데이터베이스에 사용자가없는 경우 상태를 반환하지 않으려면 어떻게해야합니..
s=$(date +%s) sleep 3s e=$(date +%s) diff=`expr ${e} - ${s}` if [ ${diff} -lt 30 ]; then echo $diff exit 1 fi https://qastack.kr/ubuntu/892604/meaning-of-exit-0-exit-1-and-exit-2-in-a-bash-script bash 스크립트에서 종료 0, 종료 1 및 종료 2의 의미 qastack.kr https://stackoverflow.com/questions/7119130/less-than-operator-in-if-statement-results-in-no-such-file-or-directory Less than operator '
https://knight76.tistory.com/entry/hive [hive] 정렬 키워드 - order by, sort by, cluster by, distribute by https://cwiki.apache.org/confluence/display/Hive/LanguageManual+SortBy 하이브에서 사용되는 정렬 키워드를 소개한다. * ORDER BY (ASC|DESC): RDMBS의 ORDER BY 문과 비슷하다. ORDER BY 문을 실행 시, 하나.. knight76.tistory.com
df .repartition(10) // No. of concurrent connection Spark to PostgreSQL .write.format('jdbc').options( url=psql_url_spark, driver=spark_env['PSQL_DRIVER'], dbtable="{schema}.{table}".format(schema=schema, table=table), user=spark_env['PSQL_USER'], password=spark_env['PSQL_PASS'], batchsize=2000000, queryTimeout=690 ).mode(mode).save() https://stackoverflow.com/questions/58676909/how-to-speed-up-..
spark = SparkSession .builder .appName("Your App") .config("spark.sql.broadcastTimeout", "36000") .getOrCreate() https://stackoverflow.com/questions/41123846/why-does-join-fail-with-java-util-concurrent-timeoutexception-futures-timed-ou Why does join fail with "java.util.concurrent.TimeoutException: Futures timed out after [300 seconds]"? I am using Spark 1.5. I have two dataframes of the form: ..
https://stackoverflow.com/questions/43415974/sort-array-order-by-a-different-column-hive sort_array order by a different column, Hive I have two columns, one of products, and one of the dates they were bought. I am able to order the dates by applying the sort_array(dates) function, but I want to be able to sort_array(products) by... stackoverflow.com
spark-submit \ --master spark://Spark master_url \ -–conf spark.yarn.keytab=path_to_keytab \ -–conf spark.yarn.principal=principal@REALM.COM \ --class main-class application-jar hdfs://namenode:9000/path/to/input https://www.ibm.com/support/knowledgecenter/SSZU2E_2.3.0/managing_cluster/kerberos_hdfs_keytab.html
SparkContext context = new SparkContext(new SparkConf().setAppName("spark-ml").setMaster("local[*]") .set("spark.hadoop.fs.default.name", "hdfs://localhost:54310").set("spark.hadoop.fs.defaultFS", "hdfs://localhost:54310") .set("spark.hadoop.fs.hdfs.impl", org.apache.hadoop.hdfs.DistributedFileSystem.class.getName()) .set("spark.hadoop.fs.hdfs.server", org.apache.hadoop.hdfs.server.namenode.Name..
spark-shell \ --conf "spark.hadoop.hive.exec.dynamic.partition=true" \ --conf "spark.hadoop.hive.exec.dynamic.partition.mode=nonstrict" \ ... https://stackoverflow.com/questions/58633753/ignoring-non-spark-config-property-hive-exec-dynamic-partition-mode
import json json.dumps(dict) https://stackoverflow.com/questions/4547274/convert-a-python-dict-to-a-string-and-back Convert a python dict to a string and back I am writing a program that stores data in a dictionary object, but this data needs to be saved at some point during the program execution and loaded back into the dictionary object when the progra... stackoverflow.com
import foo method_to_call = getattr(foo, 'bar') result = method_to_call() result = getattr(foo, 'bar')() https://stackoverflow.com/questions/3061/calling-a-function-of-a-module-by-using-its-name-a-string Calling a function of a module by using its name (a string) What is the best way to go about calling a function given a string with the function's name in a Python program. For example, let's sa..
import json print json.dumps({'4': 5, '6': 7}, sort_keys=True, ensure_ascii=False, indent=4) { "4": 5, "6": 7 } def pretty(obj): return json.dumps( obj, ensure_ascii=False, sort_keys=True, indent=4) https://stackoverflow.com/questions/9105031/how-to-beautify-json-in-python How to beautify JSON in Python? Can someone suggest how I can beautify JSON in Python or through the command line? The only ..
Tools > Developer > New Plugin... import sublime import sublime_plugin class ReverseCommand(sublime_plugin.TextCommand): def run(self, edit): for region in self.view.sel(): stringContents = self.view.substr(region) self.view.replace(edit, region, stringContents[::-1]) View > Show Console view.run_command("reverse") https://stackoverflow.com/questions/28966185/reverse-all-line-of-text-in-sublime-..
SELECT date_format(to_timestamp("2019-10-22 00:00:00", "yyyy-MM-dd HH:mm:ss"), "yyyy-MM-dd'T'HH:mm:ss.SSS'Z') https://stackoverflow.com/questions/58774777/how-to-format-date-in-spark-sql How to format date in Spark SQL? I need to transform this given date format: 2019-10-22 00:00:00 to this one: 2019-10-22T00:00:00.000Z I know this could be done in some DB via: In AWS Redshift, you can achieve t..
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