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Current Result Document :
ÇѱÛÁ¦¸ñ(Korean Title) |
Hadoop ºÐ»ê ÆÄÀÏ ½Ã½ºÅÛÀÇ È¿°úÀûÀÎ ÀúÀå °ø°£ Àý¾à ±â¹ý |
¿µ¹®Á¦¸ñ(English Title) |
An Efficient Method for Enhancing the Storage Efficiency in Hadoop DFS |
ÀúÀÚ(Author) |
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HooYoung Ahn
KyongHa Lee
SooHo Lee
YoonJoon Lee
SangMin Lee
YoungKyun Kim
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¿ø¹®¼ö·Ïó(Citation) |
VOL 19 NO. 03 PP. 0144 ~ 0148 (2013. 03) |
Çѱ۳»¿ë (Korean Abstract) |
ºÐ»ê ÆÄÀϽýºÅÛÀº ¼·Î ºÐ»êµÈ ¿©·¯ ¼¹öµéÀ» °¡Áö°í ÆÄÀÏ ½Ã½ºÅÛÀ» ±¸¼ºÇÔÀ¸·Î½á ³ôÀº È®À强°ú °í°¡¿ë¼ºÀ» Áö¿øÇÑ´Ù. ÇöÀçÀÇ ºÐ»ê ÆÄÀϽýºÅÛµéÀº ³»°íÀ强À» À§ÇØ ÁÖ·Î µ¥ÀÌÅÍ º¹Á¦ ±â¹ý¿¡ ÀÇÁ¸ÇÑ´Ù. ±×·¯³ª ÀÌ ¹æ¹ýÀº ÀúÀå °ø°£À» Ãß°¡·Î ÇÊ¿ä·Î ÇÏ´Â ´ÜÁ¡À» °¡Áø´Ù. ÀÌ ³í¹®¿¡¼´Â ÀÌ Ãß°¡ ÀúÀå °ø°£ÀÇ ¹®Á¦Á¡À» ÇØ°áÇÏ°íÀÚ erasure codingÀ» ÀÌ¿ëÇÑ Æи®Æ¼ ºí·ÏÀÇ ÀÛ¼ºÀ» ÅëÇØ µ¥ÀÌÅÍ º¹Á¦º»À» ´ëüÇÔÀ¸·Î½á µ¿ÀÏ ¼öÁØÀÇ ³»°íÀ强À» À¯ÁöÇϸ鼵µ ÀúÀå °ø°£À» º¸´Ù Àý¾àÇÏ´Â ¹æ¹ýÀ» Á¦¾ÈÇÑ´Ù. ƯÈ÷, µ¿ÀÏ ³ëµå »óÀÇ ¼·Î ´Ù¸¥ ÆÄÀÏÀÇ ºí·ÏµéÀ» ÇϳªÀÇ ½ºÆ®¶óÀÌÇÁ·Î ±¸¼ºÇÏ¿© Æи®Æ¼ ºí·ÏÀ» »ý¼ºÇÔÀ¸·Î½á ÀÎÄÚµù, µðÄÚµù ½ÃÀÇ I/O È¿À²À» Çâ»óÇÑ´Ù. ¶ÇÇÑ, erasure coding Àû¿ë ÀÌÈÄ¿¡µµ ½Å·Ú¼ºÀÌ À¯ÁöµÇ´Â ºí·Ï ¹èÄ¡ ±â¹ýÀ» Á¦¾ÈÇÏ°í ±¸ÇöÇÏ¿´´Ù.
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¿µ¹®³»¿ë (English Abstract) |
Conventional distributed file systems support high scalability and availability with many machines. Most of the distributed file systems mainly rely on data replication for providing fault-tolerance. However, the replication scheme also increases the storage overhead of the file system. To address the issue, we provide a novel method which substitutes the replica blocks with parity blocks by using erasure coding techniques. Especially, by making a stripe with the blocks which come across different files but are stored in a single node, we reduce I/O cost for encoding and decoding blocks significantly. Furthermore, we also propose and implement a novel block placement policy that supports high reliability as much as when using data replication scheme.
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Å°¿öµå(Keyword) |
HDFS(hadoop distributed file system)
erasure coding
°ø°£ È¿À²¼º
cloud computing
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ÆÄÀÏ÷ºÎ |
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