diff --git a/hadoop-hdds/common/src/main/resources/ozone-default.xml b/hadoop-hdds/common/src/main/resources/ozone-default.xml index 9b941a00cc..d6379795c7 100644 --- a/hadoop-hdds/common/src/main/resources/ozone-default.xml +++ b/hadoop-hdds/common/src/main/resources/ozone-default.xml @@ -642,17 +642,18 @@ exist then the OM will attempt to create it. If undefined, then the OM will log a warning and fallback to - ozone.metadata.dirs. + ozone.metadata.dirs. This fallback approach is not recommended for + production environments. ozone.metadata.dirs - OZONE, OM, SCM, CONTAINER, STORAGE + OZONE, OM, SCM, CONTAINER, STORAGE, REQUIRED This setting is the fallback location for SCM, OM and DataNodes - to store their metadata. This setting may be used in test/PoC clusters - to simplify configuration. + to store their metadata. This setting may be used only in test/PoC + clusters to simplify configuration. For production clusters or any time you care about performance, it is recommended that ozone.om.db.dirs, ozone.scm.db.dirs and @@ -694,7 +695,8 @@ does not exist then the SCM will attempt to create it. If undefined, then the SCM will log a warning and fallback to - ozone.metadata.dirs. + ozone.metadata.dirs. This fallback approach is not recommended for + production environments. @@ -2275,8 +2277,10 @@ Directory where the Recon Server stores its metadata. This should be specified as a single directory. If the directory does not exist then the Recon will attempt to create it. + If undefined, then the Recon will log a warning and fallback to - ozone.metadata.dirs. + ozone.metadata.dirs. This fallback approach is not recommended for + production environments. @@ -2306,8 +2310,10 @@ Directory where the Recon Server stores its OM snapshot DB. This should be specified as a single directory. If the directory does not exist then the Recon will attempt to create it. + If undefined, then the Recon will log a warning and fallback to - ozone.metadata.dirs. + ozone.metadata.dirs. This fallback approach is not recommended for + production environments.