[ https://issues.apache.org/jira/browse/HDDS-1496?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Nanda kumar updated HDDS-1496: ------------------------------ Fix Version/s: 0.4.1 > Support partial chunk reads and checksum verification > ----------------------------------------------------- > > Key: HDDS-1496 > URL: https://issues.apache.org/jira/browse/HDDS-1496 > Project: Hadoop Distributed Data Store > Issue Type: Improvement > Reporter: Hanisha Koneru > Assignee: Hanisha Koneru > Priority: Major > Labels: pull-request-available > Fix For: 0.5.0, 0.4.1 > > Time Spent: 10h 20m > Remaining Estimate: 0h > > BlockInputStream#readChunkFromContainer() reads the whole chunk from disk > even if we need to read only a part of the chunk. > This Jira aims to improve readChunkFromContainer so that only that part of > the chunk file is read which is needed by client plus the part of chunk file > which is required to verify the checksum. > For example, lets say the client is reading from index 120 to 450 in the > chunk. And let's say checksum is stored for every 100 bytes in the chunk i.e. > the first checksum is for bytes from index 0 to 99, the next for bytes from > index 100 to 199 and so on. To verify bytes from 120 to 450, we would need to > read from bytes 100 to 499 so that checksum verification can be done. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org