With the continuous increase in the volume of big data, the requirements for the physical security of data storage are getting higher and higher, and higher requirements are also put forward for the multiple copies of data and disaster recovery mechanism.
Answer(s): A
F1ink has no restart strategy.
Answer(s): B
Watermark is a mechanism proposed by Apache Flink to process EventTime window calculation, which is essentially a timestamp.
In the Mapreducei process, by default, a shard is a block and a mapTask.
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Anon commented on October 25, 2023 Q53, The answer is A. Region, not ColumnFamily Anonymous upvote
Anon commented on October 24, 2023 Q51, answer is D. Not, Anonymous upvote
Anon commented on October 24, 2023 Which statement is correct about the client uploading files to the HDF$ file system in the Hadoop system? The file data of the client is passed to the DataNode through the NameNode Allows the client to divide the file into multiple blocks, according to DaThe address information of taNodel is entered into each DataNode in order The client writes the entire file to each DataNodel in sequence according to the address information of the DataNode, and then divides the file into multiple blos by the DataNode)ck The client only uploads data to one DataNode, and then the NameNodet is responsible for block replication The answer is not B. In fact, all statements are wrong. D is almost correct but replication is done by DN not NN Anonymous upvote
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