org.apache.hadoop.hive.ql.log
Class PerfLogger

java.lang.Object
  org.apache.hadoop.hive.ql.log.PerfLogger

public class PerfLogger
extends Object

PerfLogger. Can be used to measure and log the time spent by a piece of code.

Field Summary

static String	ACQUIRE_READ_WRITE_LOCKS
static String	ANALYZE
static String	CLONE_PLAN
static String	COMPILE
static String	DESERIALIZE_PLAN
static String	DO_AUTHORIZATION
static String	DRIVER_EXECUTE
static String	DRIVER_RUN
static String	FAILURE_HOOK
static String	GET_SPLITS
static String	INPUT_SUMMARY
static String	LOAD_HASHTABLE
static String	ORC_GET_SPLITS
static String	PARSE
static String	PARTITION_RETRIEVING
static String	POST_HOOK
static String	PRE_HOOK
static String	PRUNE_LISTING
static String	RELEASE_LOCKS
static String	RUN_TASKS
static String	SERIALIZE_PLAN
static String	TASK
static String	TEZ_BUILD_DAG
static String	TEZ_CREATE_VERTEX
static String	TEZ_INIT_OPERATORS
static String	TEZ_INITIALIZE_PROCESSOR
static String	TEZ_RUN_DAG
static String	TEZ_RUN_PROCESSOR
static String	TEZ_RUN_VERTEX
static String	TEZ_SUBMIT_DAG
static String	TEZ_SUBMIT_TO_RUNNING
static String	TIME_TO_SUBMIT

Constructor Summary

PerfLogger()

Method Summary

void	close(org.apache.commons.logging.Log _log, QueryPlan queryPlan) Call this function at the end of processing a query (any time after the last call to PerfLogEnd for a given query) to run any cleanup/final steps that need to be run
Long	getEndTime(String method)
static PerfLogger	getPerfLogger()
static PerfLogger	getPerfLogger(boolean resetPerfLogger) Call this function to get an instance of PerfLogger.
Long	getStartTime(String method)
void	PerfLogBegin(String callerName, String method) Call this function when you start to measure time spent by a piece of code.
long	PerfLogEnd(String callerName, String method) Call this function in correspondence of PerfLogBegin to mark the end of the measurement.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

ACQUIRE_READ_WRITE_LOCKS

public static final String ACQUIRE_READ_WRITE_LOCKS

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Constant Field Values

COMPILE

public static final String COMPILE

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PARSE

public static final String PARSE

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ANALYZE

public static final String ANALYZE

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DO_AUTHORIZATION

public static final String DO_AUTHORIZATION

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DRIVER_EXECUTE

public static final String DRIVER_EXECUTE

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INPUT_SUMMARY

public static final String INPUT_SUMMARY

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GET_SPLITS

public static final String GET_SPLITS

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RUN_TASKS

public static final String RUN_TASKS

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SERIALIZE_PLAN

public static final String SERIALIZE_PLAN

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DESERIALIZE_PLAN

public static final String DESERIALIZE_PLAN

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Constant Field Values

CLONE_PLAN

public static final String CLONE_PLAN

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TASK

public static final String TASK

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RELEASE_LOCKS

public static final String RELEASE_LOCKS

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PRUNE_LISTING

public static final String PRUNE_LISTING

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PARTITION_RETRIEVING

public static final String PARTITION_RETRIEVING

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PRE_HOOK

public static final String PRE_HOOK

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POST_HOOK

public static final String POST_HOOK

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FAILURE_HOOK

public static final String FAILURE_HOOK

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DRIVER_RUN

public static final String DRIVER_RUN

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TIME_TO_SUBMIT

public static final String TIME_TO_SUBMIT

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Constant Field Values

TEZ_SUBMIT_TO_RUNNING

public static final String TEZ_SUBMIT_TO_RUNNING

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Constant Field Values

TEZ_BUILD_DAG

public static final String TEZ_BUILD_DAG

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TEZ_SUBMIT_DAG

public static final String TEZ_SUBMIT_DAG

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TEZ_RUN_DAG

public static final String TEZ_RUN_DAG

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TEZ_CREATE_VERTEX

public static final String TEZ_CREATE_VERTEX

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TEZ_RUN_VERTEX

public static final String TEZ_RUN_VERTEX

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TEZ_INITIALIZE_PROCESSOR

public static final String TEZ_INITIALIZE_PROCESSOR

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TEZ_RUN_PROCESSOR

public static final String TEZ_RUN_PROCESSOR

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TEZ_INIT_OPERATORS

public static final String TEZ_INIT_OPERATORS

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LOAD_HASHTABLE

public static final String LOAD_HASHTABLE

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ORC_GET_SPLITS

public static final String ORC_GET_SPLITS

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Constructor Detail

PerfLogger

public PerfLogger()

Method Detail

getPerfLogger

public static PerfLogger getPerfLogger()

getPerfLogger

public static PerfLogger getPerfLogger(boolean resetPerfLogger)

Call this function to get an instance of PerfLogger. Use resetPerfLogger to require a new instance. Useful at the beginning of execution.

Returns:

Session perflogger if there's a sessionstate, otherwise return the thread local instance

PerfLogBegin

public void PerfLogBegin(String callerName,
                         String method)

Call this function when you start to measure time spent by a piece of code.

Parameters:

_log - the logging object to be used.

method - method or ID that identifies this perf log element.

PerfLogEnd

public long PerfLogEnd(String callerName,
                       String method)

Call this function in correspondence of PerfLogBegin to mark the end of the measurement.

Parameters:

_log -

method -

Returns:

long duration the difference between now and startTime, or -1 if startTime is null

close

public void close(org.apache.commons.logging.Log _log,
                  QueryPlan queryPlan)

Call this function at the end of processing a query (any time after the last call to PerfLogEnd for a given query) to run any cleanup/final steps that need to be run

Parameters:

_log -

getStartTime

public Long getStartTime(String method)

getEndTime

public Long getEndTime(String method)