Pass the Huawei HCIA-Big Data H13-711_V3.0 Questions and answers with CertsForce

TRUE

FALSE

After obtaining this input stream, the client calls the read method to read the data. The input stream selects the nearest DataNode to establish a connection and read data.

The client calls close. to close the input stream.

The location where the data block corresponding to this file in NameNodel is obtained by calling NameNode remotely through RPC

If the end of the data block has been reached. Then close the connection with this DataNodel, and then re-find E. a data block. until all data is read.

The client calls the open method of the FileSystem instance to obtain the input stream corresponding to the file.

alter table T1 rerame to T2:/Rename table T1 to T2

firop tab1 e if exists T1.//deletesurfaceT1

create table if not exists T1 1ikeT2.//copyT2 table, including the data in the table, and named T1

rödovetab1e T1where id=, //deleteEligible in the table"id=1” ofdata.

ThriftServer for thriftcatchmouth, as JDBCservices and willHive and other applicationsintegrated

Compiler pressAccording tomissionaccording toDependent relationship is executed separatelyMap/Raduce task

Executor is responsible for editingTranslate voQLandwillwhich translates into a series of mutualrelyofMap/ReduceTask

Ooptimizer is an optimizer, divided into logicalJiyouoptimizer and physical optimizer.HiveQLGenerated execution planMapRadceTaskEnterrow optimization

Beeline

JDBC

ODBC

Restful

Secondary index compares the column to be searched with rowkey is associated with a prime index table

At this time, it is listed as a new rowkey, and the original rowkey becomes value

twoclassIndex queried 2 times

all of the abovecorrect

True

False

True

False

True

False

True

False

Fair

FIFO

Mesos

Capacity

True

False

True

False

True

False

True

False