com.gemstone.gemfire.admin
Interface MemberHealthConfig

All Known Subinterfaces:

GemFireHealthConfig

public interface MemberHealthConfig

Provides configuration information relating to the health of a member of a GemFire distributed system.

If any of the following criteria is true, then a member is considered to be in OKAY_HEALTH.

• The size of the VM process is too large.
• There are too many enqueued incoming/outgoing messages.
• Too many message sends timeout while waiting for a reply.

If any of the following criteria is true, then a member is considered to be in POOR_HEALTH.

Since:

3.5

Field Summary

static long	DEFAULT_MAX_MESSAGE_QUEUE_SIZE The default maximum number of enqueued incoming or outgoing messages that a healthy member of a distributed system can have.
static long	DEFAULT_MAX_REPLY_TIMEOUTS The default maximum number of message reply timeouts that can occur in a given health monitoring interval.
static double	DEFAULT_MAX_RETRANSMISSION_RATIO The default maximum multicast retransmission ratio.
static long	DEFAULT_MAX_VM_PROCESS_SIZE The default maximum VM process size (in megabytes) of a health member of the distributed system.

Method Summary

long	getMaxMessageQueueSize() Returns the maximum number of enqueued incoming or outgoing messages that a healthy member of a distributed system can have.
long	getMaxReplyTimeouts() Returns the maximum number message replies that can timeout in a healthy member.
double	getMaxRetransmissionRatio() Returns the maximum ratio of multicast retransmissions / total multicast messages.
long	getMaxVMProcessSize() Returns the maximum VM process size (in megabytes) of a healthy member of the distributed system.
void	setMaxMessageQueueSize(long maxMessageQueueSize) Sets the maximum number of enqueued incoming or outgoing messages that a healthy member of a distributed system can have.
void	setMaxReplyTimeouts(long maxReplyTimeouts) Sets the maximum number message replies that can timeout in a healthy member.
void	setMaxRetransmissionRatio(double ratio) Sets the maximum ratio of multicast retransmissions / total multicast messages.
void	setMaxVMProcessSize(long size) Sets the maximum VM process size (in megabytes) of a healthy member of the distributed system.

Field Detail

DEFAULT_MAX_VM_PROCESS_SIZE

static final long DEFAULT_MAX_VM_PROCESS_SIZE

The default maximum VM process size (in megabytes) of a health member of the distributed system. The default value is 1000.

See Also:

Constant Field Values

DEFAULT_MAX_MESSAGE_QUEUE_SIZE

static final long DEFAULT_MAX_MESSAGE_QUEUE_SIZE

The default maximum number of enqueued incoming or outgoing messages that a healthy member of a distributed system can have. The default value is 1000.

See Also:

Constant Field Values

DEFAULT_MAX_REPLY_TIMEOUTS

static final long DEFAULT_MAX_REPLY_TIMEOUTS

The default maximum number of message reply timeouts that can occur in a given health monitoring interval. The default value is zero.

See Also:

Constant Field Values

DEFAULT_MAX_RETRANSMISSION_RATIO

static final double DEFAULT_MAX_RETRANSMISSION_RATIO

The default maximum multicast retransmission ratio. The default value is 0.20 (twenty percent of messages retransmitted)

See Also:

Constant Field Values

Method Detail

getMaxVMProcessSize

long getMaxVMProcessSize()

Returns the maximum VM process size (in megabytes) of a healthy member of the distributed system.

See Also:

DEFAULT_MAX_VM_PROCESS_SIZE

setMaxVMProcessSize

void setMaxVMProcessSize(long size)

Sets the maximum VM process size (in megabytes) of a healthy member of the distributed system.

See Also:

getMaxVMProcessSize()

getMaxMessageQueueSize

long getMaxMessageQueueSize()

Returns the maximum number of enqueued incoming or outgoing messages that a healthy member of a distributed system can have.

See Also:

DEFAULT_MAX_MESSAGE_QUEUE_SIZE

setMaxMessageQueueSize

void setMaxMessageQueueSize(long maxMessageQueueSize)

Sets the maximum number of enqueued incoming or outgoing messages that a healthy member of a distributed system can have.

See Also:

getMaxMessageQueueSize()

getMaxReplyTimeouts

long getMaxReplyTimeouts()

Returns the maximum number message replies that can timeout in a healthy member.

See Also:

DEFAULT_MAX_REPLY_TIMEOUTS

setMaxReplyTimeouts

void setMaxReplyTimeouts(long maxReplyTimeouts)

Sets the maximum number message replies that can timeout in a healthy member.

See Also:

getMaxReplyTimeouts()

getMaxRetransmissionRatio

double getMaxRetransmissionRatio()

Returns the maximum ratio of multicast retransmissions / total multicast messages. Retransmissions are requestor-specific (i.e., unicast), so a single lost message may result in multiple retransmissions.

A high retransmission ratio may indicate poor network conditions requiring reduced flow-control settings, a udp-fragment-size setting that is too high.

See Also:

DEFAULT_MAX_RETRANSMISSION_RATIO

setMaxRetransmissionRatio

void setMaxRetransmissionRatio(double ratio)

Sets the maximum ratio of multicast retransmissions / total multicast messages.

See Also:

getMaxRetransmissionRatio()