A.Set the compression method of map output

B.Set the compression method of reduce output

C.Set the delivery method of map output

D.Set the compression method of Smap input

A.Fault tolerance

B.Partition

C.Efficient

D.Read only

A.join (right: DataFrame, join Exprs: Column): DataFrame

B.dropDuplicates():DataFrame

C.intersect (other: Data Fra me): Data Fra me

D.filter (condifionExpr: String): DataFrame

A.False

B.True

A.SolrlnputDocument doc = new SolrlnputDocument(); doc.addField ("id", i.toString()); doc.addField ("name", "Zhang San" + i); doc.addField ("features", "test" + ); doc.addField ("price", (float) i * 1.01); cloudSolrClient.add (doc); cloudSolrClient.commit();

B.if (updateRequest.getDocuments().size() >= 1000) { cloudSolrClient.request (updateRequest, collName); updateRequest.clear(); }

C.if (updateRequest.getDocumentsMap().size() >= 10000) { cloudSolrClient.request (updateRequest, collName); updateRequest.clear(); }

D.lbClient.setRequestWriter (new BinaryRequestWriter());