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3ae86632
编写于
7月 14, 2014
作者:
M
Márton Balassi
提交者:
Stephan Ewen
8月 18, 2014
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电子邮件补丁
差异文件
[streaming] WindowedWordCount Refactor
上级
f42bfb22
变更
7
隐藏空白更改
内联
并排
Showing
7 changed file
with
44 addition
and
438 deletion
+44
-438
flink-addons/flink-streaming/src/main/java/eu/stratosphere/streaming/api/FaultToleranceBuffer.java
...a/eu/stratosphere/streaming/api/FaultToleranceBuffer.java
+0
-270
flink-addons/flink-streaming/src/main/java/eu/stratosphere/streaming/test/window/wordcount/WindowWordCountCounter.java
...reaming/test/window/wordcount/WindowWordCountCounter.java
+1
-6
flink-addons/flink-streaming/src/main/java/eu/stratosphere/streaming/test/window/wordcount/WindowWordCountSink.java
.../streaming/test/window/wordcount/WindowWordCountSink.java
+6
-6
flink-addons/flink-streaming/src/main/java/eu/stratosphere/streaming/test/window/wordcount/WindowWordCountSource.java
...treaming/test/window/wordcount/WindowWordCountSource.java
+28
-9
flink-addons/flink-streaming/src/main/java/eu/stratosphere/streaming/test/window/wordcount/WindowWordCountSplitter.java
...eaming/test/window/wordcount/WindowWordCountSplitter.java
+5
-9
flink-addons/flink-streaming/src/main/java/eu/stratosphere/streaming/test/wordcount/WordCountLocal.java
...stratosphere/streaming/test/wordcount/WordCountLocal.java
+0
-133
flink-addons/flink-streaming/src/main/java/eu/stratosphere/streaming/test/wordcount/WordCountSource.java
...tratosphere/streaming/test/wordcount/WordCountSource.java
+4
-5
未找到文件。
flink-addons/flink-streaming/src/main/java/eu/stratosphere/streaming/api/FaultToleranceBuffer.java
已删除
100644 → 0
浏览文件 @
f42bfb22
/***********************************************************************************************************************
*
* Copyright (C) 2010-2014 by the Stratosphere project (http://stratosphere.eu)
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
* an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
* specific language governing permissions and limitations under the License.
*
**********************************************************************************************************************/
package
eu.stratosphere.streaming.api
;
import
java.util.HashMap
;
import
java.util.HashSet
;
import
java.util.LinkedList
;
import
java.util.List
;
import
java.util.Map
;
import
java.util.Set
;
import
java.util.SortedMap
;
import
java.util.TreeMap
;
import
eu.stratosphere.nephele.io.RecordWriter
;
/**
* An object to provide fault tolerance for Stratosphere stream processing. It
* works as a buffer to hold StreamRecords for a task for re-emitting failed, or
* timed out records.
*/
public
class
FaultToleranceBuffer
{
private
long
TIMEOUT
=
1000
;
private
Long
timeOfLastUpdate
;
private
Map
<
String
,
StreamRecord
>
recordBuffer
;
private
Map
<
String
,
Integer
>
ackCounter
;
private
SortedMap
<
Long
,
Set
<
String
>>
recordsByTime
;
private
Map
<
String
,
Long
>
recordTimestamps
;
private
List
<
RecordWriter
<
StreamRecord
>>
outputs
;
private
final
String
channelID
;
private
int
numberOfOutputs
;
/**
* Creates fault tolerance buffer object for the given output channels and
* channel ID
*
* @param outputs
* List of outputs
* @param channelID
* ID of the task object that uses this buffer
*/
public
FaultToleranceBuffer
(
List
<
RecordWriter
<
StreamRecord
>>
outputs
,
String
channelID
)
{
this
.
timeOfLastUpdate
=
System
.
currentTimeMillis
();
this
.
outputs
=
outputs
;
this
.
recordBuffer
=
new
HashMap
<
String
,
StreamRecord
>();
this
.
ackCounter
=
new
HashMap
<
String
,
Integer
>();
this
.
numberOfOutputs
=
outputs
.
size
();
this
.
channelID
=
channelID
;
this
.
recordsByTime
=
new
TreeMap
<
Long
,
Set
<
String
>>();
this
.
recordTimestamps
=
new
HashMap
<
String
,
Long
>();
}
/**
* Adds the record to the fault tolerance buffer. This record will be
* monitored for acknowledgements and timeout.
*
*/
public
void
addRecord
(
StreamRecord
streamRecord
)
{
recordBuffer
.
put
(
streamRecord
.
getId
(),
streamRecord
);
ackCounter
.
put
(
streamRecord
.
getId
(),
numberOfOutputs
);
addTimestamp
(
streamRecord
.
getId
());
}
/**
* Checks for records that have timed out since the last check and fails them.
*
* @param currentTime
* Time when the check should be made, usually current system time.
* @return Returns the list of the records that have timed out.
*/
List
<
String
>
timeoutRecords
(
Long
currentTime
)
{
if
(
timeOfLastUpdate
+
TIMEOUT
<
currentTime
)
{
List
<
String
>
timedOutRecords
=
new
LinkedList
<
String
>();
Map
<
Long
,
Set
<
String
>>
timedOut
=
recordsByTime
.
subMap
(
0L
,
currentTime
-
TIMEOUT
);
for
(
Set
<
String
>
recordSet
:
timedOut
.
values
())
{
if
(!
recordSet
.
isEmpty
())
{
for
(
String
recordID
:
recordSet
)
{
timedOutRecords
.
add
(
recordID
);
}
}
}
recordsByTime
.
keySet
().
removeAll
(
timedOut
.
keySet
());
for
(
String
recordID
:
timedOutRecords
)
{
failRecord
(
recordID
);
}
timeOfLastUpdate
=
currentTime
;
return
timedOutRecords
;
}
return
null
;
}
/**
* Stores time stamp for a record by recordID and also adds the record to a
* map which maps a time stamp to the IDs of records that were emitted at that
* time.
* <p>
* Later used for timeouts.
*
* @param recordID
* ID of the record
*/
public
void
addTimestamp
(
String
recordID
)
{
Long
currentTime
=
System
.
currentTimeMillis
();
recordTimestamps
.
put
(
recordID
,
currentTime
);
if
(
recordsByTime
.
containsKey
(
currentTime
))
{
recordsByTime
.
get
(
currentTime
).
add
(
recordID
);
}
else
{
Set
<
String
>
recordSet
=
new
HashSet
<
String
>();
recordSet
.
add
(
recordID
);
recordsByTime
.
put
(
currentTime
,
recordSet
);
}
}
/**
* Returns a StreamRecord after removing it from the buffer
*
* @param recordID
* The ID of the record that will be popped
*/
public
StreamRecord
popRecord
(
String
recordID
)
{
System
.
out
.
println
(
"Pop ID: "
+
recordID
);
StreamRecord
record
=
recordBuffer
.
get
(
recordID
);
removeRecord
(
recordID
);
return
record
;
}
/**
* Removes a StreamRecord by ID from the fault tolerance buffer, further acks
* will have no effects for this record.
*
* @param recordID
* The ID of the record that will be removed
*
*/
void
removeRecord
(
String
recordID
)
{
recordBuffer
.
remove
(
recordID
);
ackCounter
.
remove
(
recordID
);
try
{
Long
ts
=
recordTimestamps
.
remove
(
recordID
);
recordsByTime
.
get
(
ts
).
remove
(
recordID
);
}
catch
(
NullPointerException
e
)
{
}
catch
(
Exception
e
)
{
e
.
printStackTrace
();
System
.
out
.
println
(
recordID
);
}
}
/**
* Acknowledges the record of the given ID, if all the outputs have sent
* acknowledgments, removes it from the buffer
*
* @param recordID
* ID of the record that has been acknowledged
*/
// TODO: find a place to call timeoutRecords
public
void
ackRecord
(
String
recordID
)
{
if
(
ackCounter
.
containsKey
(
recordID
))
{
int
ackCount
=
ackCounter
.
get
(
recordID
)
-
1
;
if
(
ackCount
==
0
)
{
removeRecord
(
recordID
);
}
else
{
ackCounter
.
put
(
recordID
,
ackCount
);
}
}
// timeoutRecords(System.currentTimeMillis());
}
/**
* Re-emits the failed record for the given ID, removes the old record and
* stores it with a new ID.
*
* @param recordID
* ID of the record that has been failed
*/
public
void
failRecord
(
String
recordID
)
{
// Create new id to avoid double counting acks
System
.
out
.
println
(
"Fail ID: "
+
recordID
);
StreamRecord
newRecord
=
popRecord
(
recordID
).
setId
(
channelID
);
addRecord
(
newRecord
);
reEmit
(
newRecord
);
}
/**
* Emit give record to all output channels
*
* @param record
* Record to be re-emitted
*/
public
void
reEmit
(
StreamRecord
record
)
{
for
(
RecordWriter
<
StreamRecord
>
output
:
outputs
)
{
try
{
output
.
emit
(
record
);
System
.
out
.
println
(
"Re-emitted"
);
}
catch
(
Exception
e
)
{
System
.
out
.
println
(
"Re-emit failed"
);
}
}
}
public
long
getTIMEOUT
()
{
return
this
.
TIMEOUT
;
}
public
void
setTIMEOUT
(
long
TIMEOUT
)
{
this
.
TIMEOUT
=
TIMEOUT
;
}
public
Map
<
String
,
StreamRecord
>
getRecordBuffer
()
{
return
this
.
recordBuffer
;
}
public
Long
getTimeOfLastUpdate
()
{
return
this
.
timeOfLastUpdate
;
}
public
Map
<
String
,
Integer
>
getAckCounter
()
{
return
this
.
ackCounter
;
}
public
SortedMap
<
Long
,
Set
<
String
>>
getRecordsByTime
()
{
return
this
.
recordsByTime
;
}
public
Map
<
String
,
Long
>
getRecordTimestamps
()
{
return
this
.
recordTimestamps
;
}
public
List
<
RecordWriter
<
StreamRecord
>>
getOutputs
()
{
return
this
.
outputs
;
}
public
String
getChannelID
()
{
return
this
.
channelID
;
}
public
int
getNumberOfOutputs
()
{
return
this
.
numberOfOutputs
;
}
void
setNumberOfOutputs
(
int
numberOfOutputs
)
{
this
.
numberOfOutputs
=
numberOfOutputs
;
}
}
flink-addons/flink-streaming/src/main/java/eu/stratosphere/streaming/test/window/wordcount/WindowWordCountCounter.java
浏览文件 @
3ae86632
...
...
@@ -18,7 +18,6 @@ package eu.stratosphere.streaming.test.window.wordcount;
import
java.util.HashMap
;
import
java.util.Map
;
import
eu.stratosphere.streaming.api.AtomRecord
;
import
eu.stratosphere.streaming.api.StreamRecord
;
import
eu.stratosphere.streaming.api.invokable.UserTaskInvokable
;
import
eu.stratosphere.types.IntValue
;
...
...
@@ -35,7 +34,6 @@ public class WindowWordCountCounter extends UserTaskInvokable {
private
IntValue
countValue
=
new
IntValue
(
1
);
private
LongValue
timestamp
=
new
LongValue
(
0
);
private
String
word
=
""
;
private
AtomRecord
outputRecord
=
new
AtomRecord
(
3
);
private
int
count
=
1
;
@Override
...
...
@@ -51,10 +49,7 @@ public class WindowWordCountCounter extends UserTaskInvokable {
wordCounts
.
put
(
word
,
1
);
countValue
.
setValue
(
1
);
}
outputRecord
.
setField
(
0
,
wordValue
);
outputRecord
.
setField
(
1
,
countValue
);
outputRecord
.
setField
(
2
,
timestamp
);
emit
(
new
StreamRecord
(
outputRecord
));
emit
(
new
StreamRecord
(
wordValue
,
countValue
,
timestamp
));
}
}
flink-addons/flink-streaming/src/main/java/eu/stratosphere/streaming/test/window/wordcount/WindowWordCountSink.java
浏览文件 @
3ae86632
...
...
@@ -23,15 +23,15 @@ import eu.stratosphere.types.StringValue;
public
class
WindowWordCountSink
implements
UserSinkInvokable
{
private
StringValue
word
=
new
StringValue
(
""
);
private
IntValue
count
=
new
IntValue
(
1
);
private
LongValue
timestamp
=
new
LongValue
(
0
);
private
StringValue
word
=
new
StringValue
();
private
IntValue
count
=
new
IntValue
();
private
LongValue
timestamp
=
new
LongValue
();
@Override
public
void
invoke
(
StreamRecord
record
)
throws
Exception
{
word
=
(
StringValue
)
record
.
getField
(
0
,
0
);
count
=
(
IntValue
)
record
.
getField
(
0
,
1
);
timestamp
=
(
LongValue
)
record
.
getField
(
0
,
2
);
word
=
(
StringValue
)
record
.
getField
(
0
,
0
);
count
=
(
IntValue
)
record
.
getField
(
0
,
1
);
timestamp
=
(
LongValue
)
record
.
getField
(
0
,
2
);
System
.
out
.
println
(
"============================================"
);
System
.
out
.
println
(
word
.
getValue
()
+
" "
+
count
.
getValue
()
+
" "
+
timestamp
.
getValue
());
...
...
flink-addons/flink-streaming/src/main/java/eu/stratosphere/streaming/test/window/wordcount/WindowWordCountSource.java
浏览文件 @
3ae86632
...
...
@@ -15,26 +15,45 @@
package
eu.stratosphere.streaming.test.window.wordcount
;
import
eu.stratosphere.streaming.api.AtomRecord
;
import
java.io.BufferedReader
;
import
java.io.FileNotFoundException
;
import
java.io.FileReader
;
import
eu.stratosphere.streaming.api.StreamRecord
;
import
eu.stratosphere.streaming.api.invokable.UserSourceInvokable
;
import
eu.stratosphere.types.LongValue
;
import
eu.stratosphere.types.StringValue
;
public
class
WindowWordCountSource
extends
UserSourceInvokable
{
private
final
String
motto
=
"Gyuszi Gabor Big Marci Gyuszi"
;
private
BufferedReader
br
=
null
;
private
String
line
=
new
String
();
private
StringValue
lineValue
=
new
StringValue
();
private
LongValue
timestampValue
=
new
LongValue
();
private
long
timestamp
;
private
AtomRecord
mottoRecord
=
null
;
public
WindowWordCountSource
()
{
try
{
br
=
new
BufferedReader
(
new
FileReader
(
"src/test/resources/testdata/hamlet.txt"
));
}
catch
(
FileNotFoundException
e
)
{
e
.
printStackTrace
();
}
}
@Override
public
void
invoke
()
throws
Exception
{
timestamp
=
0
;
for
(
int
i
=
0
;
i
<
2
;
++
i
)
{
mottoRecord
=
new
AtomRecord
(
2
);
mottoRecord
.
setField
(
0
,
new
StringValue
(
motto
));
mottoRecord
.
setField
(
1
,
new
LongValue
(
timestamp
));
emit
(
new
StreamRecord
(
mottoRecord
));
++
timestamp
;
line
=
br
.
readLine
().
replaceAll
(
"[\\-\\+\\.\\^:,]"
,
""
);
while
(
line
!=
null
)
{
if
(
line
!=
""
)
{
lineValue
.
setValue
(
line
);
timestampValue
.
setValue
(
timestamp
);
emit
(
new
StreamRecord
(
lineValue
,
timestampValue
));
}
line
=
br
.
readLine
();
timestamp
++;
}
}
}
flink-addons/flink-streaming/src/main/java/eu/stratosphere/streaming/test/window/wordcount/WindowWordCountSplitter.java
浏览文件 @
3ae86632
...
...
@@ -15,7 +15,6 @@
package
eu.stratosphere.streaming.test.window.wordcount
;
import
eu.stratosphere.streaming.api.AtomRecord
;
import
eu.stratosphere.streaming.api.StreamRecord
;
import
eu.stratosphere.streaming.api.invokable.UserTaskInvokable
;
import
eu.stratosphere.types.LongValue
;
...
...
@@ -23,11 +22,10 @@ import eu.stratosphere.types.StringValue;
public
class
WindowWordCountSplitter
extends
UserTaskInvokable
{
private
StringValue
sentence
=
new
StringValue
(
""
);
private
LongValue
timestamp
=
new
LongValue
(
0
);
private
String
[]
words
=
new
String
[
0
];
private
StringValue
wordValue
=
new
StringValue
(
""
);
private
AtomRecord
outputRecord
=
new
AtomRecord
(
2
);
private
StringValue
sentence
=
new
StringValue
();
private
LongValue
timestamp
=
new
LongValue
();
private
String
[]
words
=
new
String
[]{};
private
StringValue
wordValue
=
new
StringValue
();
@Override
public
void
invoke
(
StreamRecord
record
)
throws
Exception
{
...
...
@@ -38,9 +36,7 @@ public class WindowWordCountSplitter extends UserTaskInvokable {
words
=
sentence
.
getValue
().
split
(
" "
);
for
(
CharSequence
word
:
words
)
{
wordValue
.
setValue
(
word
);
outputRecord
.
setField
(
0
,
wordValue
);
outputRecord
.
setField
(
1
,
timestamp
);
emit
(
new
StreamRecord
(
outputRecord
));
emit
(
new
StreamRecord
(
wordValue
,
timestamp
));
}
}
}
\ No newline at end of file
flink-addons/flink-streaming/src/main/java/eu/stratosphere/streaming/test/wordcount/WordCountLocal.java
已删除
100644 → 0
浏览文件 @
f42bfb22
/***********************************************************************************************************************
*
* Copyright (C) 2010-2014 by the Stratosphere project (http://stratosphere.eu)
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
* an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
* specific language governing permissions and limitations under the License.
*
**********************************************************************************************************************/
package
eu.stratosphere.streaming.test.wordcount
;
import
org.apache.hadoop.fs.FileSystem
;
import
org.apache.log4j.Level
;
import
org.junit.Assert
;
import
eu.stratosphere.client.minicluster.NepheleMiniCluster
;
import
eu.stratosphere.configuration.Configuration
;
import
eu.stratosphere.nephele.client.JobClient
;
import
eu.stratosphere.nephele.jobgraph.JobGraph
;
import
eu.stratosphere.streaming.api.JobGraphBuilder
;
import
eu.stratosphere.types.StringValue
;
import
eu.stratosphere.util.LogUtils
;
public
class
WordCountLocal
{
private
static
final
int
MINIMUM_HEAP_SIZE_MB
=
192
;
protected
final
Configuration
config
;
private
NepheleMiniCluster
executor
;
public
WordCountLocal
()
{
this
(
new
Configuration
());
}
public
WordCountLocal
(
Configuration
config
)
{
verifyJvmOptions
();
this
.
config
=
config
;
LogUtils
.
initializeDefaultConsoleLogger
(
Level
.
WARN
);
}
private
void
verifyJvmOptions
()
{
long
heap
=
Runtime
.
getRuntime
().
maxMemory
()
>>
20
;
Assert
.
assertTrue
(
"Insufficient java heap space "
+
heap
+
"mb - set JVM option: -Xmx"
+
MINIMUM_HEAP_SIZE_MB
+
"m"
,
heap
>
MINIMUM_HEAP_SIZE_MB
-
50
);
}
public
void
startCluster
()
throws
Exception
{
this
.
executor
=
new
NepheleMiniCluster
();
this
.
executor
.
setDefaultOverwriteFiles
(
true
);
this
.
executor
.
start
();
}
public
void
stopCluster
()
throws
Exception
{
try
{
if
(
this
.
executor
!=
null
)
{
this
.
executor
.
stop
();
this
.
executor
=
null
;
FileSystem
.
closeAll
();
System
.
gc
();
}
}
finally
{
}
}
public
void
runJob
()
throws
Exception
{
// submit job
JobGraph
jobGraph
=
null
;
try
{
jobGraph
=
getJobGraph
();
}
catch
(
Exception
e
)
{
System
.
err
.
println
(
e
.
getMessage
());
e
.
printStackTrace
();
Assert
.
fail
(
"Failed to obtain JobGraph!"
);
}
Assert
.
assertNotNull
(
"Obtained null JobGraph"
,
jobGraph
);
try
{
JobClient
client
=
null
;
try
{
client
=
this
.
executor
.
getJobClient
(
jobGraph
);
}
catch
(
Exception
e
)
{
System
.
err
.
println
(
"here"
);
}
client
.
submitJobAndWait
();
}
catch
(
Exception
e
)
{
System
.
err
.
println
(
e
.
getMessage
());
e
.
printStackTrace
();
Assert
.
fail
(
"Job execution failed!"
);
}
}
protected
JobGraph
getJobGraph
()
throws
Exception
{
JobGraphBuilder
graphBuilder
=
new
JobGraphBuilder
(
"testGraph"
);
graphBuilder
.
setSource
(
"WordCountSource"
,
WordCountSource
.
class
);
graphBuilder
.
setTask
(
"WordCountSplitter"
,
WordCountSplitter
.
class
,
2
);
graphBuilder
.
setTask
(
"WordCountCounter"
,
WordCountCounter
.
class
,
2
);
graphBuilder
.
setSink
(
"WordCountSink"
,
WordCountSink
.
class
);
graphBuilder
.
broadcastConnect
(
"WordCountSource"
,
"WordCountSplitter"
);
graphBuilder
.
fieldsConnect
(
"WordCountSplitter"
,
"WordCountCounter"
,
0
,
StringValue
.
class
);
graphBuilder
.
broadcastConnect
(
"WordCountCounter"
,
"WordCountSink"
);
return
graphBuilder
.
getJobGraph
();
}
public
static
void
main
(
String
[]
args
){
WordCountLocal
wC
=
new
WordCountLocal
();
try
{
wC
.
startCluster
();
wC
.
runJob
();
wC
.
stopCluster
();
}
catch
(
Exception
e
)
{}
}
}
flink-addons/flink-streaming/src/main/java/eu/stratosphere/streaming/test/wordcount/WordCountSource.java
浏览文件 @
3ae86632
...
...
@@ -29,8 +29,7 @@ public class WordCountSource extends UserSourceInvokable {
private
BufferedReader
br
=
null
;
private
String
line
=
new
String
();
private
StringValue
lineValue
=
new
StringValue
();
private
Value
[]
hamletValues
=
new
StringValue
[
1
];
private
StreamRecord
hamletRecord
=
new
StreamRecord
(
1
);
private
Value
[]
values
=
new
StringValue
[
1
];
public
WordCountSource
()
{
try
{
...
...
@@ -47,9 +46,9 @@ public class WordCountSource extends UserSourceInvokable {
while
(
line
!=
null
)
{
if
(
line
!=
""
)
{
lineValue
.
setValue
(
line
);
hamletV
alues
[
0
]
=
lineValue
;
// TODO:
use hamletRecord instead
emit
(
new
StreamRecord
(
hamletV
alues
));
v
alues
[
0
]
=
lineValue
;
// TODO:
object reuse
emit
(
new
StreamRecord
(
v
alues
));
}
line
=
br
.
readLine
();
}
...
...
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