cd /opt/impala
LD_LIBRARY_PATH=/opt/impala/lib/native:/usr/lib/jvm/java-17-openjdk-amd64/lib/server \
  /opt/impala/sbin/impalad --help

Flags from ……/be/src/catalog/catalog-server.cc:
    -catalog_service_port (port where the CatalogService is running)
      type: int32 default: 26000
    -catalog_topic_mode (……) type: string default: "full"
    -mem_limit (……Specified as number of bytes ('<int>[bB]?'), megabytes
      ('<float>[mM]'), gigabytes ('<float>[gG]'), or percentage of the physical
      memory ('<int>%'). Defaults to bytes if no unit is given.)
      type: string default: "80%"
    -state_store_host (hostname where StatestoreService is running)
      type: string default: "localhost"
    -state_store_port (port where StatestoreService is running) type: int32
      default: 24000
    -use_local_catalog (Use the on-demand metadata feature in coordinators……)
      type: bool default: false
    -beeswax_port (……This interface is deprecated……) type: int32 default: 21000
    -hs2_port (……HiveServer2 client requests……) type: int32 default: 21050
    -webserver_port (Port to start debug webserver on) type: int32 default: 25000
    -max_log_files (Maximum number of log files to retain per severity level.
      The most recent log files are retained……) type: int32 default: 10
    -max_log_size (……log file size (in MB)……) type: int32 default: 1800

# statestored --help：
    -state_store_port  …… default: 24000
    -webserver_port    …… default: 25000 currently: 25010
# catalogd --help：
    -catalog_service_port …… default: 26000
    -webserver_port       …… default: 25000 currently: 25020

cd /opt/impala && bin/impala.sh restart impalad
cd /opt/impala && bin/impala.sh restart catalogd
cd /opt/impala && bin/impala.sh restart statestored

ps -eo pid,args | grep [i]mpalad

LD_LIBRARY_PATH=/opt/impala/lib/native:/usr/lib/jvm/java-17-openjdk-amd64/lib/server \
  /opt/impala/sbin/impalad -help 2>&1 | grep -A4 -E "^\s+-(hostname|state_store_host|state_store_port|catalog_service_host|catalog_service_port) "

    -hostname (Hostname to use for this daemon, also used as part of the
      Kerberos principal, if enabled. If not set, the system default will be
      used) type: string default: "" currently: "impalad"
    -state_store_host (hostname where StatestoreService is running)
      type: string default: "localhost"
    -state_store_port (port where StatestoreService is running) type: int32
      default: 24000
    -catalog_service_host (hostname where CatalogService is running)
      type: string default: "localhost"

/opt/impala/sbin/impalad -help 2>&1 | grep -A3 -E "^\s+-(beeswax_port|hs2_port|webserver_port|krpc_port) "

    -beeswax_port (port on which Beeswax client requests are served.If 0 or
      less, the Beeswax server is not started. This interface is deprecated and
      will be removed in a future version.) type: int32 default: 21000
    -hs2_port (port on which HiveServer2 client requests are served.If 0 or
      less, the HiveServer2 server is not started.) type: int32 default: 21050
    -webserver_port (Port to start debug webserver on) type: int32
      default: 25000
    -krpc_port (port on which KRPC based ImpalaInternalService is exported)
      type: int32 default: 27000

/opt/impala/sbin/impalad -help 2>&1 | grep -A8 -E "^\s+-mem_limit "

    -mem_limit (Limit on process memory consumption. Includes the JVM's memory
      consumption only if --mem_limit_includes_jvm is true. Specified as number
      of bytes ('<int>[bB]?'), megabytes ('<float>[mM]'), gigabytes
      ('<float>[gG]'), or percentage of the physical memory ('<int>%').
      Defaults to bytes if no unit is given.) type: string default: "80%"

    -mem_limit_includes_jvm (If true, --mem_limit will include the JVM's max
      heap size and committed memory in the process memory limit.) type: bool
      default: false
    -admission_control_slots ((Advanced) The maximum degree of parallelism to
      run queries with on this backend. This determines the number of slots
      available to queries in admission control for this backend. The degree of
      parallelism of the query determines the number of slots that it needs.

/opt/impala/sbin/impalad -help 2>&1 | grep -A8 -E "^\s+-use_local_catalog "

    -use_local_catalog (Use the on-demand metadata feature in coordinators. If
      this is set, coordinators pull metadata as needed from catalogd and cache
      it locally. The cached metadata gets evicted automatically under memory
      pressure or after an expiration time.) type: bool default: false

/opt/impala/sbin/impalad -help 2>&1 | grep -A3 -E "^\s+-(is_coordinator|is_executor) "

    -is_coordinator (If true, this Impala daemon can accept and coordinate
      queries from clients. If false, it will refuse client connections.)
      type: bool default: true
    -is_executor (If true, this Impala daemon will execute query fragments.)
      type: bool default: true

/opt/impala/sbin/impalad -help 2>&1 | grep -A2 -E "^\s+-(default_query_options|disconnected_session_timeout) "

    -default_query_options (key=value pair of default query options for
      impalad, separated by ',') type: string default: ""
    -disconnected_session_timeout (The time, in seconds, that a hiveserver2
      session will be maintained after the last connection that it has been
      used over is disconnected.) type: int32 default: 900

LD_LIBRARY_PATH=/opt/impala/lib/native:/usr/lib/jvm/java-17-openjdk-amd64/lib/server \
  /opt/impala/sbin/catalogd -help 2>&1 | grep -A3 -E "^\s+-(catalog_service_port|state_store_host|state_store_port) "

    -catalog_service_port (port where the CatalogService is running)
      type: int32 default: 26000
    -state_store_host (hostname where StatestoreService is running)
      type: string default: "localhost"
    -state_store_port (port where StatestoreService is running) type: int32
      default: 24000

    -catalog_topic_mode (The type of data that the catalog service will publish
      into the Catalog StateStore topic. Valid values are 'full', 'mixed', or
      'minimal'.
      In 'full' mode, complete catalog objects are published any time a new
      version is available. In 'minimal' mode, only a minimal object is
      published when a new version of a catalog object is available. In 'mixed'
      mode, both types of topic entries are published.
      When all impalad coordinators are configured with --use_local_catalog
      disabled (the default), 'full' mode should be used. If all impalad
      coordinators are configured with --use_local_catalog enabled, 'minimal'
      mode should be used. When some impalads are configured with
      --use_local_catalog disabled and others configured with it enabled, then
      'mixed' mode is required.) type: string default: "full"

-hive_metastore_uris=thrift://metastore:9083

    -invalidate_metadata_on_event_processing_failure (This configuration is
      used to invalidate metadata for table(s) upon event process failure other
      than HMS connection issues. The default value is true. When enabled,
      failure can put metastore event processor in non-active state.) type: bool default: true
    -max_wait_time_for_sync_ddl_s (Maximum time (in seconds) until which a sync
      ddl operation will wait for the updated tables to be the added to the
      topic) type: int32
    -start_hms_server (When set to true catalog server starts a HMS server at a
      port specified by hms_port flag) type: bool default: false
    -hms_port (If start_hms_server is set to true, this configuration specifies
      the port number at which it is started.) type: int32 default: 5899

LD_LIBRARY_PATH=/opt/impala/lib/native:/usr/lib/jvm/java-17-openjdk-amd64/lib/server \
  /opt/impala/sbin/statestored -help 2>&1 | grep -A4 -E "^\s+-(hostname|statestore_port|statestore_heartbeat_frequency_ms|statestore_heartbeat_tcp_timeout_seconds|log_filename) "

    -hostname (Hostname to use for this daemon, also used as part of the
      Kerberos principal, if enabled. If not set, the system default will be
      used) type: string default: "" currently: "statestored"
    -log_filename (Prefix of log filename - full path is
      <log_dir>/<log_filename>.[INFO|WARN|ERROR|FATAL]) type: string
      default: ""
    -statestore_heartbeat_frequency_ms ((Advanced) Frequency (in ms) with which
      the statestore sends heartbeat heartbeats to subscribers.) type: int32
      default: 1000
    -statestore_heartbeat_tcp_timeout_seconds ((Advanced) The time after which
      a heartbeat RPC to a subscriber will timeout. This setting protects

cat /opt/impala/conf/impala-env.sh | grep JAVA_TOOL_OPTIONS

export JAVA_TOOL_OPTIONS=${JAVA_TOOL_OPTIONS:- -Xms256m -Xmx512m}

# 例：改为初始 512MB、最大 1GB
sed -i 's/-Xms256m -Xmx512m/-Xms512m -Xmx1g/' /opt/impala/conf/impala-env.sh

# 重启 catalogd
/opt/impala/bin/impala.sh restart catalogd

# 重启 impalad
/opt/impala/bin/impala.sh restart impalad

grep -E "JAVA_TOOL_OPTIONS|Xmx|Xms" /tmp/catalogd.*.log.INFO.* | tail -2

-mem_limit=3072m

sed -i 's/-mem_limit=3072m/-mem_limit=1536m/' /opt/impala/conf/impalad_flags
/opt/impala/bin/impala.sh restart impalad

-v=1                      # glog 详细级别（1 为默认）
-log_filename=impalad     # 日志文件名前缀（<前缀>.<主机>.<级别>.<时间戳>.<pid>）
-max_log_files=10         # 每个级别保留的最大文件数
-max_log_size=200         # 单文件最大 MB 数

/opt/impala/shell/impala-shell -i impalad:21000 --protocol=beeswax -q "SET;" --quiet

Query options (defaults shown in []):
        ABORT_ON_ERROR: [0]
        COMPRESSION_CODEC: []
        DEFAULT_FILE_FORMAT: [TEXT]
        DEFAULT_HINTS_INSERT_STATEMENT: []
        DISABLE_CODEGEN: [0]
        DISABLE_HDFS_NUM_ROWS_ESTIMATE: [0]
        DISABLE_ROW_RUNTIME_FILTERING: [0]
        DISABLE_STREAMING_PREAGGREGATIONS: [0]
        DISABLE_UNSAFE_SPILLS: [0]
        ENABLE_TRIVIAL_QUERY_FOR_ADMISSION: [1]
        EXEC_TIME_LIMIT_S: [0]

/opt/impala/shell/impala-shell -i impalad:21000 --protocol=beeswax -q "SET mem_limit=2g;"

MEM_LIMIT set to 2g

/opt/impala/sbin/impalad -help 2>&1 | grep -A3 -E "^\s+-(ldap|server_credentials|ssl|kerberos|webserver_certificate) " | head -40

-server_credentials=/etc/impala/keystore.jks
-ssl_server_certificate=/etc/impala/cert.pem
-ssl_private_key=/etc/impala/key.pem

    -hostname (Hostname to use for this daemon, also used as part of the
      Kerberos principal, if enabled. If not set, the system default will be
      used) type: string default: "" currently: "impalad"

ps aux | grep impalad | grep -v grep | tr ' ' '\n' | grep '^-'

-hostname=impalad
-catalog_service_host=catalogd
-state_store_host=statestored
-mem_limit=3072m
-v=1
-log_filename=impalad
-max_log_files=10
-max_log_size=200
-use_local_catalog=false

-hostname=impalad
-catalog_service_host=catalogd
-state_store_host=statestored
-mem_limit=3072m
-v=1
-log_filename=impalad
-max_log_files=10
-max_log_size=200
-use_local_catalog=false

-hostname=catalogd
-state_store_host=statestored
-hive_metastore_uris=thrift://metastore:9083
-catalog_topic_mode=full
-v=1
-log_filename=catalogd
-max_log_files=10
-max_log_size=200

-hostname=statestored
-v=1
-log_filename=statestored
-max_log_files=10
-max_log_size=200

-hostname=impala-01
-state_store_port=24000
-v=1
-log_filename=statestored
-max_log_files=10
-max_log_size=200

-hostname=impala-01
-state_store_host=impala-01
-hive_metastore_uris=thrift://impala-01:9083
-catalog_topic_mode=full
-mem_limit=4g
-v=1
-log_filename=catalogd
-max_log_files=10
-max_log_size=200

-hostname=impala-01
-catalog_service_host=impala-01
-state_store_host=impala-01
-mem_limit=6g
-use_local_catalog=false
-v=1
-log_filename=impalad
-max_log_files=10
-max_log_size=200