what is the consequence of setting enableQueryTimeouts to FALSE?
MySQL Connector-J has a property enableQueryTimeouts which is TRUE by default. However, in the documentation it is mentioned as :
When enabled, query timeouts set via Statement.setQueryTimeout() use a shared java.util.Timer instance for scheduling. Even if the timeout doesn't expire before the query is processed, there will be memory used by the TimerTask for the given timeout which won't be reclaimed until the time the timeout would have expired if it hadn't been cancelled by the driver. High-load environments might want to consider disabling this functionality
So, I want to disable enableQueryTimeouts to gain high performance. However, if I disable enableQueryTimeouts, then
- How a query will timeout?
- Will there any consequences ?
Please help
mysql java
asked Dec 15 '15 at 13:16
real gadhareal gadha
635
bumped to the homepage by Community♦ 12 mins ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
add a comment |
MySQL Connector-J has a property enableQueryTimeouts which is TRUE by default. However, in the documentation it is mentioned as :
When enabled, query timeouts set via Statement.setQueryTimeout() use a shared java.util.Timer instance for scheduling. Even if the timeout doesn't expire before the query is processed, there will be memory used by the TimerTask for the given timeout which won't be reclaimed until the time the timeout would have expired if it hadn't been cancelled by the driver. High-load environments might want to consider disabling this functionality
So, I want to disable enableQueryTimeouts to gain high performance. However, if I disable enableQueryTimeouts, then
- How a query will timeout?
- Will there any consequences ?
Please help
mysql java
asked Dec 15 '15 at 13:16
real gadhareal gadha
635
bumped to the homepage by Community♦ 12 mins ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
This seems to be connector/Java specific timeout. Even when disabled the queries might still timeout on lock waits etc, but it would be a different mechanism.
– jkavalik
Dec 15 '15 at 13:22
The official documentation for reference.
– tdaget
Sep 21 '18 at 13:08
add a comment |
MySQL Connector-J has a property enableQueryTimeouts which is TRUE by default. However, in the documentation it is mentioned as :
When enabled, query timeouts set via Statement.setQueryTimeout() use a shared java.util.Timer instance for scheduling. Even if the timeout doesn't expire before the query is processed, there will be memory used by the TimerTask for the given timeout which won't be reclaimed until the time the timeout would have expired if it hadn't been cancelled by the driver. High-load environments might want to consider disabling this functionality
So, I want to disable enableQueryTimeouts to gain high performance. However, if I disable enableQueryTimeouts, then
- How a query will timeout?
- Will there any consequences ?
Please help
mysql java
asked Dec 15 '15 at 13:16
real gadhareal gadha
635
MySQL Connector-J has a property enableQueryTimeouts which is TRUE by default. However, in the documentation it is mentioned as :
When enabled, query timeouts set via Statement.setQueryTimeout() use a shared java.util.Timer instance for scheduling. Even if the timeout doesn't expire before the query is processed, there will be memory used by the TimerTask for the given timeout which won't be reclaimed until the time the timeout would have expired if it hadn't been cancelled by the driver. High-load environments might want to consider disabling this functionality
So, I want to disable enableQueryTimeouts to gain high performance. However, if I disable enableQueryTimeouts, then
- How a query will timeout?
- Will there any consequences ?
Please help
mysql java
mysql java
asked Dec 15 '15 at 13:16
real gadhareal gadha
635
asked Dec 15 '15 at 13:16
real gadhareal gadha
635
asked Dec 15 '15 at 13:16
real gadhareal gadha
635
asked Dec 15 '15 at 13:16
real gadhareal gadha
635
asked Dec 15 '15 at 13:16
real gadhareal gadha
635
635
bumped to the homepage by Community♦ 12 mins ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
bumped to the homepage by Community♦ 12 mins ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
This seems to be connector/Java specific timeout. Even when disabled the queries might still timeout on lock waits etc, but it would be a different mechanism.
– jkavalik
Dec 15 '15 at 13:22
The official documentation for reference.
– tdaget
Sep 21 '18 at 13:08
add a comment |
This seems to be connector/Java specific timeout. Even when disabled the queries might still timeout on lock waits etc, but it would be a different mechanism.
– jkavalik
Dec 15 '15 at 13:22
The official documentation for reference.
– tdaget
Sep 21 '18 at 13:08
This seems to be connector/Java specific timeout. Even when disabled the queries might still timeout on lock waits etc, but it would be a different mechanism.
– jkavalik
Dec 15 '15 at 13:22
This seems to be connector/Java specific timeout. Even when disabled the queries might still timeout on lock waits etc, but it would be a different mechanism.
– jkavalik
Dec 15 '15 at 13:22
The official documentation for reference.
– tdaget
Sep 21 '18 at 13:08
The official documentation for reference.
– tdaget
Sep 21 '18 at 13:08
add a comment |
1 Answer
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Consequences: if there is a slow query(s) your system will be too slow, hang, or even go out of memory.
if QueryTimeout is disabled from MySQL or the connector it will stay until its finished (how to enable it from MySQL SET GLOBAL MAX_STATEMENT_TIME=XXX; -- where XXX=number
answered Dec 15 '15 at 15:14
Ahmad AbuhasnaAhmad Abuhasna
1,94531329
Note: Not available until 5.7.4; a flurry of fixes occurred in 5.7.8.
– Rick James
Dec 16 '15 at 23:56
add a comment |
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1 Answer
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active
oldest
votes
1 Answer
1
active
oldest
votes
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active
oldest
votes
Consequences: if there is a slow query(s) your system will be too slow, hang, or even go out of memory.
if QueryTimeout is disabled from MySQL or the connector it will stay until its finished (how to enable it from MySQL SET GLOBAL MAX_STATEMENT_TIME=XXX; -- where XXX=number
answered Dec 15 '15 at 15:14
Ahmad AbuhasnaAhmad Abuhasna
1,94531329
Note: Not available until 5.7.4; a flurry of fixes occurred in 5.7.8.
– Rick James
Dec 16 '15 at 23:56
add a comment |
Consequences: if there is a slow query(s) your system will be too slow, hang, or even go out of memory.
if QueryTimeout is disabled from MySQL or the connector it will stay until its finished (how to enable it from MySQL SET GLOBAL MAX_STATEMENT_TIME=XXX; -- where XXX=number
answered Dec 15 '15 at 15:14
Ahmad AbuhasnaAhmad Abuhasna
1,94531329
Note: Not available until 5.7.4; a flurry of fixes occurred in 5.7.8.
– Rick James
Dec 16 '15 at 23:56
add a comment |
Consequences: if there is a slow query(s) your system will be too slow, hang, or even go out of memory.
if QueryTimeout is disabled from MySQL or the connector it will stay until its finished (how to enable it from MySQL SET GLOBAL MAX_STATEMENT_TIME=XXX; -- where XXX=number
answered Dec 15 '15 at 15:14
Ahmad AbuhasnaAhmad Abuhasna
1,94531329
Consequences: if there is a slow query(s) your system will be too slow, hang, or even go out of memory.
if QueryTimeout is disabled from MySQL or the connector it will stay until its finished (how to enable it from MySQL SET GLOBAL MAX_STATEMENT_TIME=XXX; -- where XXX=number
answered Dec 15 '15 at 15:14
Ahmad AbuhasnaAhmad Abuhasna
1,94531329
answered Dec 15 '15 at 15:14
Ahmad AbuhasnaAhmad Abuhasna
1,94531329
answered Dec 15 '15 at 15:14
Ahmad AbuhasnaAhmad Abuhasna
1,94531329
answered Dec 15 '15 at 15:14
Ahmad AbuhasnaAhmad Abuhasna
1,94531329
1,94531329
Note: Not available until 5.7.4; a flurry of fixes occurred in 5.7.8.
– Rick James
Dec 16 '15 at 23:56
add a comment |
Note: Not available until 5.7.4; a flurry of fixes occurred in 5.7.8.
– Rick James
Dec 16 '15 at 23:56
Note: Not available until 5.7.4; a flurry of fixes occurred in 5.7.8.
– Rick James
Dec 16 '15 at 23:56
Note: Not available until 5.7.4; a flurry of fixes occurred in 5.7.8.
– Rick James
Dec 16 '15 at 23:56
add a comment |
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This seems to be connector/Java specific timeout. Even when disabled the queries might still timeout on lock waits etc, but it would be a different mechanism.
– jkavalik
Dec 15 '15 at 13:22
The official documentation for reference.
– tdaget
Sep 21 '18 at 13:08