hadoop job description

;Build Bucket TableCREATE TABLE par_table (viewtime INT, UserID BIGINT, Page_url string, referrer_url string, IP string COMMENT ' IP Address of the User ') COMMENT ' the Page view table ' partitioned by (date STRING, pos string) CLUSTERED by (userid ) SORTED by (Viewtime) to BUCKETS ROW FORMAT delimited ' \ t ' fields TERMINATED by ' \ n ' STORED as sequencefile; Create a table and create an indexed field DSHive> CREATE TABLE invites (foo INT, bar string) partitioned by (DS string); Copy an emp

stackChildregs->ax = 0; Why the fork of the subprocess returns 0, here is the reason! P->THREAD.SP = (unsigned long) childregs; top of the kernel stack when dispatched to a child processP->thread.ip = (unsigned long) ret_from_fork; the address of the first instruction when dispatched to a child process3. Where does the child process start?Childregs The kernel stack dispatched to the child processRet_from_fork The first instruction address dispatched to the child process↓Syscall_exit↓Restore_al

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The memory of the error:Last semester took the visualization of this course, the final big job with D3 implementation, in the use of D3 read CSV data when the following error occurred:I first read the data in a CSV format in the code, put it into the variable root, and then traverse through the root, then make statistics, and finally put some statistically obtained results into the other variable temp. And this temp declaration is before the CSV data

planned time so accurate, design gives the page design, the front end is not fully implemented;And the response, that is, the mobile side will have a little style exception;In addition is the new positioning function, with the high-level map API to obtain the current latitude and longitude, inverse address resolution function, at present in the Zilk and repair garden and close to the school area outside the error is large, is also being resolved;Several test positioning functions are attached:M