Key | Default | Type | Description
--- | --- | --- | ---
##### env.hadoop.conf.dir | (none) | String | Path to hadoop configuration directory. It is required to read HDFS and/or YARN configuration. You can also set it via environment variable.
##### env.hbase.conf.dir | (none) | String | Path to hbase configuration directory. It is required to read HBASE configuration. You can also set it via environment variable.
##### env.java.default-opts.all | (none) | String | A string of default JVM options to prepend to `env.java.opts.all`. This is intended to be set by administrators.
##### env.java.default-opts.jobmanager | (none) | String | A string of default JVM options to prepend to `env.java.opts.jobmanager`. This is intended to be set by administrators.
##### env.java.default-opts.taskmanager | (none) | String | A string of default JVM options to prepend to `env.java.opts.taskmanager`. This is intended to be set by administrators.
##### env.java.opts.all | (none) | String | Java options to start the JVM of all Flink processes with.
##### env.java.opts.client | (none) | String | Java options to start the JVM of the Flink Client with.
##### env.java.opts.historyserver | (none) | String | Java options to start the JVM of the HistoryServer with.
##### env.java.opts.jobmanager | (none) | String | Java options to start the JVM of the JobManager with.
##### env.java.opts.sql-gateway | (none) | String | Java options to start the JVM of the Flink SQL Gateway with.
##### env.java.opts.taskmanager | (none) | String | Java options to start the JVM of the TaskManager with.
##### env.log.dir | (none) | String | Defines the directory where the Flink logs are saved. It has to be an absolute path. (Defaults to the log directory under Flink’s home)
##### env.log.level | "INFO" | String | Defines the level of the root logger.
##### env.log.max | 10 | Integer | The maximum number of old log files to keep.
##### env.pid.dir | "/tmp" | String | Defines the directory where the flink-<host>-<process>.pid files are saved.
##### env.ssh.opts | (none) | String | Additional command line options passed to SSH clients when starting or stopping JobManager, TaskManager, and Zookeeper services (start-cluster.sh, stop-cluster.sh, start-zookeeper-quorum.sh, stop-zookeeper-quorum.sh).
##### env.stdout-err.redirect-to-file | false | Boolean | Whether redirect stdout and stderr to files when running foreground. If enabled, logs won't append the console too. Note that redirected files do not support rolling rotate.
##### env.yarn.conf.dir | (none) | String | Path to yarn configuration directory. It is required to run flink on YARN. You can also set it via environment variable.