input stringlengths 10 828 | output stringlengths 5 107 |
|---|---|
public datanode descriptor choose random string scope if scope starts with return choose random node base root scope substring 1 else return choose random scope null | randomly choose one node from i scope i |
public boolean exists path f throws ioexception return fs exists f | check if exists |
public boolean is directory path f throws ioexception return fs is directory f | true iff the named path is a directory |
public long get length path f throws ioexception return fs get length f | the number of bytes in a file |
protected void set user job conf props boolean do early props iterator it user job conf props key set iterator while it has next string key string it next string val string user job conf props get key boolean early name key equals fs default name early name key equals stream shipped hadoopstreaming if do early props early name msg xxx job conf set key val early do early props job conf set key val | this method sets the user jobconf variable specified |
public boolean mkdirs path f throws ioexception return fs mkdirs f | make the given file and all non existent parents into directories |
public long get checksum file length path file long file size return fsoutput summer get checksum length file size get bytes per sum | return the length of the checksum file given the size of the |
public int get bytes per sum return get conf get int io bytes per checksum 512 | return the bytes per checksum |
public string to string print the number of racks string buffer tree new string buffer tree append number of racks tree append num of racks tree append n print the number of leaves int num of leaves get num of leaves tree append expected number of leaves tree append num of leaves tree append n print datanodes for int i 0 i num of leaves i tree append cluster map get leaf i null get path tree append n return tree to string | convert a network tree to a string |
public long get block size path f throws ioexception return fs get block size f | get the block size for a particular file |
public short get replication path f throws ioexception return 1 | replication is not supported for the local file system |
public void checkpoint throws ioexception if fs exists current no trash no checkpoint return path checkpoint synchronized checkpoint checkpoint new path root checkpoint format new date if fs rename current checkpoint log info created trash checkpoint checkpoint else throw new ioexception failed to checkpoint trash checkpoint | create a trash checkpoint |
private void copy bytes input stream in output stream out throws ioexception print stream ps out instanceof print stream print stream out null byte buf new byte conf get int io file buffer size 4096 int bytes read in read buf while bytes read 0 out write buf 0 bytes read if ps null ps check error throw new ioexception unable to write to output stream bytes read in read buf | copies from one stream to another |
public short get replication path src throws ioexception return 1 | replication is not supported for the inmemory file system |
public path make qualified path path check path path if path is absolute path new path get working directory path uri path uri path to uri uri fs uri get uri string scheme path uri get scheme string authority path uri get authority if scheme null authority null fs uri get authority null return path if scheme null scheme fs uri get scheme if authority null authority fs uri get authority if authority null authority return new path scheme authority path uri get path | make sure that a path specifies a file system |
private void copy from stdin path dst throws ioexception if fs is directory dst throw new ioexception when source is stdin destination must be a file if fs exists dst throw new ioexception target dst to string already exists fsdata output stream out fs create dst try copy bytes system in out finally out close | copies from stdin to the indicated file |
protected void check path path path uri uri path to uri if uri get scheme null fs is relative return string this authority this get uri get authority string that authority uri get authority if this get uri get scheme equals uri get scheme this authority null that authority null this authority equals that authority throw new illegal argument exception wrong fs path expected this get uri | check that a path belongs to this file system |
private void print to stdout path src throws ioexception if fs is directory src throw new ioexception source must be a file fsdata input stream in fs open src try copy bytes in system out finally in close | print from src to stdout |
private void set replication string cmd int pos throws ioexception if cmd length pos 2 cmd length pos 2 cmd pos equals ignore case r system err println usage r repvalue path system exit 1 boolean recursive false short rep 3 if r equals ignore case cmd pos recursive true pos try rep short parse short cmd pos pos catch number format exception e system err println cannot set replication to cmd pos system exit 1 set replication rep cmd pos recursive | parse the incoming command string |
public boolean is directory path f throws ioexception return is file f | directory operations are not supported |
public fsdata output stream create path f throws ioexception return create f true get conf get int io file buffer size 4096 get default replication get default block size | opens an fsdata output stream at the indicated path |
private void set file replication path file short new rep throws ioexception if fs set replication file new rep system out println replication new rep set file else system err println could not set replication for file | actually set the replication for this file |
public void lock path f boolean shared throws ioexception | lock operations are not supported |
public progress add phase progress phase new progress phases add phase phase parent this progress per phase 1 0f float phases size return phase | adds a node to the tree |
public progress phase return progress phases get current phase | returns the current sub node executing |
public void set writable obj instance obj class clazzes get types for int i 0 i clazzes length i class clazz clazzes i if clazz is instance instance type byte i return throw new runtime exception the type of instance is instance get class which is not registered | set the instance that is wrapped |
public void complete progress 1 0f if parent null parent start next phase | completes this node moving the parent node to its next child |
public void set float progress this progress progress | called during execution on a leaf node to set its progress |
public float get progress node this while node parent null find the root node parent return node get internal | returns the overall progress of the root |
private float get internal int phase count phases size if phase count 0 float sub progress current phase phase count phase get internal 0 0f return progress per phase current phase sub progress else return progress | computes progress in this node |
public void dus string src throws ioexception path paths fs glob paths new path src if paths null paths length 0 throw new ioexception dus no match src for int i 0 i paths length i path items fs list paths paths i if items null int total size 0 for int j 0 j items length j total size fs get content length items j string path str paths i to string system out println equals path str path str t total size | show the summary disk usage of each dir file |
static public compression type get compression type configuration job string name job get io seqfile compression type return name null compression type record compression type value of name | get the compression type for the reduce outputs |
public boolean is file path f throws ioexception if exists f is directory f return true else return false | true iff the named path is a regular file |
public void mkdir string src throws ioexception path f new path src if fs mkdirs f throw new ioexception mkdirs failed to create src | create the given dir |
public boolean reserve space path f int size synchronized this if can fit in memory size return false file attributes file attr try file attr new file attributes size catch out of memory error o return false total used size temp file attribs put get path f file attr return true | register a path with its size |
public long get content length path f throws ioexception if is directory f f is a file return get length f f is a diretory path contents list paths f long size 0 for int i 0 i contents length i size get content length contents i return size | return the number of bytes of the given path |
public void rename string srcf string dstf throws ioexception path srcs fs glob paths new path srcf path dst new path dstf if srcs length 1 fs is directory dst throw new ioexception when moving multiple files destination should be a directory for int i 0 i srcs length i if fs rename srcs i dst system out println renamed srcs i to dstf else throw new ioexception rename failed srcs i | move files that match the file pattern i srcf i |
public boolean delete path f throws ioexception if fs is directory f return fs delete f else path check file get checksum file f if fs exists check file fs delete check file return fs delete f | get rid of path f whether a true file or dir |
public string get default extension return deflate | get the default filename extension for this kind of compression |
public void copy string srcf string dstf configuration conf throws ioexception path srcs fs glob paths new path srcf path dst new path dstf if srcs length 1 fs is directory dst throw new ioexception when copying multiple files destination should be a directory for int i 0 i srcs length i file util copy fs srcs i fs dst false conf | copy files that match the file pattern i srcf i |
public void delete string srcf boolean recursive throws ioexception path srcs fs glob paths new path srcf for int i 0 i srcs length i delete srcs i recursive | delete all files that match the file pattern i srcf i |
public string get default extension return gz | get the default filename extension for this kind of compression |
public void set byte new data int offset int length set size 0 set size length system arraycopy new data 0 bytes 0 size | set the value to a copy of the given byte range |
public boolean reserve space with check sum path f int size get the size of the checksum file we know it is going to be int since this is an inmem fs with file sizes that will fit in 4 bytes long checksum size get checksum file length f size raw in memory file system mfs raw in memory file system get raw file system synchronized mfs return mfs reserve space f size mfs reserve space get checksum file f int get checksum file length f size | register a file with its size |
public string to string string buffer sb new string buffer 3 size for int idx 0 idx size idx if not the first put a blank separator in if idx 0 sb append string num integer to hex string int bytes idx if it is only one digit add a leading 0 if num length 2 sb append 0 sb append num return sb to string | generate the stream of bytes as hex pairs separated by |
public void close throws ioexception uri uri get uri synchronized file system class map string file system authority to fs cache get uri get scheme if authority to fs null authority to fs remove uri get authority | no more filesystem operations are needed |
public void set text other set other bytes 0 other length | copy a text |
public long get used throws ioexception long used 0 path files list paths new path for path file files used get content length file return used | return the total size of all files in the filesystem |
public string to string try return decode bytes 0 length catch character coding exception e return null | convert text back to string |
private void lock int idx throws ioexception random access file file random access file storage files get idx file lock lock file get channel try lock if lock null log a warning log warn cannot lock storage file in directory orig dirs idx get name remove the file from file list and close it storage files add idx null file close storage locks add idx lock | lock datastorage file |
private void unlock int idx throws ioexception file lock lock file lock storage locks get idx if lock null lock release | unlock datastorage file |
private void close int idx throws ioexception file lock lock file lock storage locks get idx if lock null return lock release random access file file random access file storage files get idx file close | close a datastorage file |
public void close all throws ioexception for int idx 0 idx dirs length idx close idx | close all datastorage files |
private boolean read int idx throws ioexception random access file file random access file storage files get idx if file null return false file seek 0 this version file read int this storage id utf8 read string file return false | read data storage file |
private void write int idx throws ioexception random access file file random access file storage files get idx if file null return file seek 0 file write int this version utf8 write string file this storage id | write data storage file |
public void write all throws ioexception for int idx 0 idx dirs length idx write idx | write all data storage files |
public void shutdown should run false try info server stop catch exception e | shut down this instance of the datanode |
synchronized public boolean is dir return blocks null | check whether its a directory |
private void get fsimage throws ioexception string fs name get info server string fileid getimage 1 transfer fs image get file client fs name fileid src image log info downloaded file src image size src image length bytes | get the current fsimage from namenode |
public long get block size if blocks null blocks length 0 return 0 else return blocks 0 get num bytes | get the block size of the first block |
public void do updates metrics context unused synchronized this metrics record incr metric files created num files created metrics record incr metric files opened num files opened metrics record incr metric files renamed num files renamed metrics record incr metric files listed num files listed num files created 0 num files opened 0 num files renamed 0 num files listed 0 metrics record update | since this object is a registered updater this method will be called |
private void get fsedits throws ioexception string fs name get info server string fileid getedit 1 transfer fs image get file client fs name fileid edit file log info downloaded file edit file size edit file length bytes | get the old edits file from the name node |
private void put fsimage throws ioexception string fs name get info server string fileid putimage 1 port info port machine inet address get local host get host address log info posted url fs name fileid transfer fs image get file client fs name fileid file null | copy the new fsimage into the name node |
private void do merge throws ioexception fsimage fs image new fsimage checkpoint dir fs edits fsnamesystem namesystem new fsnamesystem fs image fs image load fsimage conf src image fs image get edit log load fsedits conf edit file fs image save fsimage dest fs image | merges src fs image with fs edits and writes the output into |
public void do updates metrics context unused synchronized this metrics record incr metric bytes read bytes read metrics record incr metric bytes written bytes written metrics record incr metric blocks read blocks read metrics record incr metric blocks written blocks written metrics record incr metric blocks replicated blocks replicated metrics record incr metric blocks removed blocks removed bytes written 0 bytes read 0 blocks written 0 blocks read 0 blocks replicated 0 blocks removed 0 metrics record update | since this object is a registered updater this method will be called |
public void close throws ioexception fs image get edit log close | shutdown the filestore |
public void stop if stop requested stop requested true namesystem close emptier interrupt server stop | stop all name node threads and wait for all to finish |
public void fsck throws ioexception try dfsfile info files nn get listing path fsck result res new fsck result res set replication short conf get int dfs replication 3 if files null for int i 0 i files length i check files i res out println res if res is healthy out println n n the filesystem under path path is healthy else out println n n the filesystem under path path is corrupt else out println n n path path does not exist finally out close | check files on dfs starting from the indicated path |
public void get block info tree set block block set if children null for int i 0 i children length i children i get block info block set file block files dir list files for int i 0 i block files length i if block is block filename block files i block set add new block block files i block files i length | populate the given block set with any child blocks |
public boolean rename to utf8 src utf8 dst name node state change log debug dir fsdirectory rename to src to dst wait for ready if unprotected rename to src dst return false fs image get edit log log rename src dst return true | change the filename |
public boolean delete path f throws ioexception return dfs delete get path f | get rid of path f whether a true file or dir |
public long get block size string filename throws ioexception synchronized root dir inode file node root dir get node filename if file node null throw new ioexception unknown file filename if file node is dir throw new ioexception getting block size of a directory filename return file node get block size | get the blocksize of a file |
public void report written block located block lb throws ioexception block b lb get block datanode info targets lb get locations state change log debug block name node report written block b get block name is written to targets length locations for int i 0 i targets length i namesystem block received targets i b | the client can report in a set written blocks that it wrote |
public boolean is healthy return missing ids size 0 | dfs is considered healthy if there are no missing blocks |
public void shutdown try info server stop catch exception e this should run false data xceive server this data xceive server get runnable kill try this storage close all catch ioexception ie | shut down this instance of the datanode |
public void abandon block block b string src throws ioexception state change log debug block name node abandon block b get block name of file src if namesystem abandon block b new utf8 src throw new ioexception cannot abandon block during write to src | the client needs to give up on the block |
public array list get missing ids return missing ids | return a list of missing block names as list of strings |
private int new namespace id random r new random r set seed system current time millis int new id 0 while new id 0 new id r next int return new id | generate new namespace id |
public boolean is dir utf8 src synchronized root dir inode node root dir get node normalize path src return node null node is dir | check whether the path specifies a directory |
public long get over replicated blocks return over replicated blocks | return the number of over replicated blocks |
public void close synchronized this fs running false try pending replications stop info server stop hbthread join 3000 replthread join 3000 dnthread join 3000 catch interrupted exception ie finally using finally to ensure we also wait for lease daemon try lmthread join 3000 catch interrupted exception ie finally try dir close catch ioexception ex do nothing | close down this filesystem manager |
public void report bad blocks located block blocks throws ioexception state change log debug dir name node report bad blocks for int i 0 i blocks length i block blk blocks i get block datanode info nodes blocks i get locations for int j 0 j nodes length j datanode info dn nodes j namesystem invalidate block blk dn | the client has detected an error on the specified located blocks |
public boolean is valid block block b synchronized root dir if active blocks contains key b return true else return false | returns whether the given block is one pointed to by a file |
public void write data output out throws ioexception datanode id id new datanode id node get name node get storage id node get info port id write out out write long node get capacity out write long node get remaining out write long node get last update out write int node get xceiver count | public method that serializes the information about a |
public float get replication factor if total blocks 0 return float total blocks replication over replicated blocks under replicated blocks float total blocks else return 0 0f | return the actual replication factor |
public long get under replicated blocks return under replicated blocks | return the number of under replicated blocks |
public inode get file by block block b synchronized root dir return inode active blocks get b | returns whether the given block is one pointed to by a file |
public boolean is valid block block b file f get file b return f null f exists | check whether the given block is a valid one |
public int refresh nodes throws ioexception int exit code 1 if fs instanceof distributed file system system out println file system is fs get name return exit code distributed file system dfs distributed file system fs dfs refresh nodes exit code 0 return exit code | command to ask the namenode to reread the hosts and excluded hosts |
public void print usage string cmd if report equals cmd system err println usage java dfsadmin report else if safemode equals cmd system err println usage java dfsadmin safemode enter leave get wait else if refresh nodes equals cmd system err println usage java dfsadmin refresh nodes else system err println usage java dfsadmin system err println report system err println safemode enter leave get wait system err println refresh nodes | displays format of commands |
public long get block size return block size | get the block size of the file |
public void close throws ioexception synchronize in here so that we don t need to change the api synchronized this check open synchronized pending creates iterator file itr pending creates key set iterator while file itr has next string name string file itr next try namenode abandon file in progress name client name catch ioexception ie system err println exception abandoning create lock on name ie print stack trace pending creates clear this running false try lease checker join catch interrupted exception ie | close the file system abadoning all of the leases and files being |
public long get raw capacity throws ioexception return raw distributed file system fs get raw capacity | return the total raw capacity of the filesystem disregarding |
public long get raw used throws ioexception return raw distributed file system fs get raw used | return the total raw used space in the filesystem disregarding |
public dfsinput stream open utf8 src throws ioexception check open get block info from namenode return new dfsinput stream src to string | create an input stream that obtains a nodelist from the |
public boolean prepare throws ioexception task std out log writer init initialize the child task s stdout log task std err log writer init initialize the child task s stderr log return true | called to assemble this tasks input |
public long get shuffle finish time return shuffle finish time | get shuffle finish time for the task |
public long get sort finish time return sort finish time | get sort finish time for the task |
public void kill if process null process destroy killed true | kill the child process |
public void roll edit log throws ioexception namesystem roll edit log | roll the edit log |
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