[ https://issues.apache.org/jira/browse/HDFS-14484?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
xudongcao updated HDFS-14484: ----------------------------- Summary: Ozone: Freon: Support big files larger than 2GB and improve concurrent framework. (was: Ozone: Freon: Support big files larger than 2GB and improve concurrent operations.) > Ozone: Freon: Support big files larger than 2GB and improve concurrent > framework. > --------------------------------------------------------------------------------- > > Key: HDFS-14484 > URL: https://issues.apache.org/jira/browse/HDFS-14484 > Project: Hadoop HDFS > Issue Type: Bug > Components: benchmarks > Reporter: xudongcao > Assignee: xudongcao > Priority: Major > > *Current problems:* > 1. Freon does not support big files larger than 2GB because it use an int > type "keySize" parameter and also "keyValue" buffer size. > 2. Freon allocates a entire buffer for each key at once, so if the key size > is large and the concurrency is high, freon will report OOM exception > frequently. > 3. The existing concurrency framework only supports volume-level > concurrency, but in actual testing, a user is likely to specify a small > number of volumes, and a larger number of buckets and keys . At this point, > it can't take full advantage of thread pool to speed up testing. > *And we need:* > 1. Use a long type "keySize" parameter, make sure freon can support big > files larger than 2GB. > 2. Use a small buffer repeatedly than allocating the entire key-size buffer > at once, the default buffer size is 4K and can be configured by "–bufferSize" > parameter. > 3. Improve the concurrency framework. Now the volume creation task, bucket > creation task, and key creation task all can be submitted to the thread pool > concurrently as a general task. > > > -- 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