I understand that, when writing to a file, I can force it to update its length on the namenode by using the following command:
((DFSOutputStream) imageWriter.getWrappedStream()).hsync(EnumSet.of(SyncFlag.UPDATE_LENGTH)); Is there a way to force the update without having to open a DFSOutputStream? Can I do this from the FileSystem class or some other Java class? The reason for this is that I am mostly writing to HDFS and only occasionally reading. However, when I go to read, I am most often reading the most recent data written (reading the end of the file not the beginning). If I could force the length update at the time of reading that would save time by not having to make sure I update the length every time I write to the file (which is about once per second). Thanks, David David R Robison Senior Systems Engineer O. +1 512 247 3700 M. +1 757 286 0022 david.robi...@psgglobal.net<mailto:david.robi...@psgglobal.net> www.psgglobal.net<http://www.psgglobal.net/> Prometheus Security Group Global, Inc. 3019 Alvin Devane Boulevard Building 4, Suite 450 Austin, TX 78741
