### Motivation

`pulsar-function-go/conf` package apply `instance-conf-path` with default value `HOME_PATH+github.com/apache/pulsar/pulsar-function-go/conf/conf.yaml`, once function deployed, the running node may not have the yaml conf file exist, then go function will panic with `not found conf file` error.

This PR changed the logic of config parsing, parse `confContent` first, then parse `confFilePath` if `confContent` empty.

(cherry picked from commit 8a3b3af6)

### Motivation

After the changes in #3118, there has a been a sharp increase of memory utilization for the UnackedMessageTracker due to the time buckets being created.

This is especially true when the acktimeout is set to a larger value (eg: 1h) where 3600 time-buckets are being created. This lead to use 20MB per partition even when no message is tracked.

Allowing to configure the tick time so that application can tune it based on needs.

Additionally, fixed the logic that keeps creating hash maps and throwing them away at each tick time iteration, since that creates a lot of garbage and doesn't take care of the fact that the hash maps are expanding based on the required capacity (so next time they are already of the "right" size).

On a final note: the current default of 1sec seems very wasteful. Something like 10s should be more appropriate as default.

(cherry picked from commit f13af487)

*Motivation*

When using PulsarService or BrokerService for testing, it might require accessing
the components in PulsarService and BrokerService. This change is adding setters
and getters to access the components in PulsarService & BrokerService
(cherry picked from commit 5cff1691)

### Motivation

Currently, if the kubernetes namespace set to deploy functions in is different than the one in which brokers/workers reside, get status and stats doesn't work because the url for instances does not specify the namespace.
(cherry picked from commit 8c3445ad)

(cherry picked from commit 26fc4efe)

### Motivation

Currently golang function needs to be compiled before deploy to pulsar, so the executable permission is required when function package is downloaded to local node from bookkeeper. This PR is intent to make golang function package executable after download from bookkeeper, to make sure the function is ok to run.
(cherry picked from commit bf58c8eb)

**Motivation**
when create partitioned topic, there is a check that `numPartitions > 1`, if numPartitions==1, it will fail.
Some user may want to create partitioned topic with only 1 topic at the start time, and during using it, could update to more topics later.

**Modification**
change check of `numPartitions > 1` to `numPartitions > 0`

expect all existing ut passed.
(cherry picked from commit 5162393c)

(cherry picked from commit d8f61553)

### Motivation
to fix #4724

### Verifying this change
Add the tests for it

(cherry picked from commit 6ec2e16b)

(cherry picked from commit 9605aede)

### Motivation

If trying to build master C++ code with the `USE_LOG4CXX` flag turned ON, compilation errors occur:
```
/tmp/pulsar/pulsar-client-cpp/lib/Log4cxxLogger.cc: In static member function ‘static log4cxx::LevelPtr pulsar::Log4CxxLogger::getLevel(pulsar::Logger::Level)’:
/tmp/pulsar/pulsar-client-cpp/lib/Log4cxxLogger.cc:53:18: error: ‘DEBUG’ was not declared in this scope
             case DEBUG:
                  ^
/tmp/pulsar/pulsar-client-cpp/lib/Log4cxxLogger.cc:55:18: error: ‘INFO’ was not declared in this scope
             case INFO:
                  ^
/tmp/pulsar/pulsar-client-cpp/lib/Log4cxxLogger.cc:57:18: error: ‘WARN’ was not declared in this scope
             case WARN:
                  ^
/tmp/pulsar/pulsar-client-cpp/lib/Log4cxxLogger.cc:59:18: error: ‘ERROR’ was not declared in this scope
             case ERROR:
                  ^
/tmp/pulsar/pulsar-client-cpp/lib/Log4cxxLogger.cc:52:16: error: enumeration value ‘LEVEL_DEBUG’ not handled in switch [-Werror=switch]
         switch (level) {
                ^
/tmp/pulsar/pulsar-client-cpp/lib/Log4cxxLogger.cc:52:16: error: enumeration value ‘LEVEL_INFO’ not handled in switch [-Werror=switch]
/tmp/pulsar/pulsar-client-cpp/lib/Log4cxxLogger.cc:52:16: error: enumeration value ‘LEVEL_WARN’ not handled in switch [-Werror=switch]
/tmp/pulsar/pulsar-client-cpp/lib/Log4cxxLogger.cc:52:16: error: enumeration value ‘LEVEL_ERROR’ not handled in switch [-Werror=switch]
cc1plus: some warnings being treated as errors
make[2]: *** [lib/CMakeFiles/pulsarStatic.dir/Log4cxxLogger.cc.o] Error 1
make[2]: *** Waiting for unfinished jobs....
```

This is because the enum values renamed in https://github.com/apache/pulsar/pull/4664 are still used in `Log4cxxLogger.cc`.

### Modifications

Fixed the enum values used in `Log4cxxLogger.cc` by adding the prefix `LEVEL_`.

(cherry picked from commit af8ea71a)

Fixes #4589

Motivation
When using Partition-topic, the logic of redeliver messages will not be triggered when the time of ackTimeout arrives.

This is because the unAckedMessageTrackerPtr_->add(msg.getMessageId()) is not call in the listener handling of partitioned topic in cpp code
(cherry picked from commit cc5f25bf)

Fixes #4734

### Motivation

"publish_time" is Pulsar SQL internal column, as Pulsar only stores timestamps, it doesn’t store the timezone information. Use timestamp as "publish_time" type is more correct way in Pulsar SQL.

### Modifications

Change type of publish_time to timestamp.

### Verifying this change

predicate of publish_time is pushdown

Use `__publish_time__` to trim messages:
```
SELECT COUNT(*)
FROM "sql-test-1"
WHERE "__publish_time__" >= TIMESTAMP '2019-07-18 17:26:50.119'
AND  "__publish_time__" < TIMESTAMP '2019-07-18 17:26:51.119';
```
![image](https://user-images.githubusercontent.com/12592133/61447301-43835080-a983-11e9-814b-bc2b378f02b9.png)

Without `__publish_time__` predicate:
```
SELECT COUNT(*)
FROM "sql-test-1";
```
![image](https://user-images.githubusercontent.com/12592133/61447427-82190b00-a983-11e9-8d3f-3bf2a4798047.png)

(cherry picked from commit 6f5416ee)

## Motivation

Currently, In Pulsar Kerberos authentication, The server type part of pulsar node principle is hard coded as "broker" and "proxy". The expected principle for pulsar nodes would be like "broker/brokera.host.name@your.com" or "proxy/proxyb.host.name@your.com".

But some times, user may want to re-use existing principle like "u-service/host.name@some.com", to test and play around, then "u-service" will not match service type of "broker" or "proxy", and the authentication will be rejected.
This change is to remove the check of "broker" or "proxy" service type check.

## Modifaction

Remove the check of "broker" or "proxy" service type check.
(cherry picked from commit f5b20cd3)

* Fix: predicate pushdown for Pulsar SQL NPE

* fix unit test

(cherry picked from commit ac10b006)

Signed-off-by: xiaolong.ran <ranxiaolong716@gmail.com>(cherry picked from commit 23dd38f3)

Upgrading to Mockito 2.28 and PowerMock 2.0. This a pre-step to be able to run CI with Java 11 / 12

(cherry picked from commit 108780c7)

Fixes https://github.com/apache/pulsar/issues/4228

Master Issue: https://github.com/apache/pulsar/issues/4228

### Motivation

Use Pulsar schema in pulsar kafka client.

### Modifications

Support schema of pulsar for pulsar kafka client

### Verifying this change

Add Unit test
(cherry picked from commit 99d3c11e)

*Motivation*

Currently producers uses `System.currentTimeMillis()` as publish timestamp by default.
However at some use cases, producers would like to a different way for generating publish timestamp.
E.g. in a database use case, a producer might be use HLC (Hybrid Logic Clock) as publish timestamp;
in integration tests, it might require the producer to use a deterministic way to generate publish timestamp.

*Changes*

This PR introduces a `clock` in building the client. This allows applications to override the system clock
with its own implementation.

*Verify the change*

Add unit test to test customized clock in both batch and non-batch cases.

(cherry picked from commit 7397b960)

* Add static import statements for Assert to simplify the test in the presto module

* Use the preferred way of the schema's creation. The predicates and functions were converted to lambda

(cherry picked from commit c421ca6e)

* ### Motivation
When installing the pulsar-client-2.5.0 using the image openjdk:8-jdk-slim, for debian 10 systems, python3.7 will be installed when apt-get install python3 is executed. When installing the client using pip3, the following exception will be thrown
```
cat /etc/issue
Debian GNU/Linux 10 \n \l

root@40fdedf3f3c3:/# python3
Python 3.7.3 (default, Apr  3 2019, 05:39:12)
[GCC 8.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>>

root@40fdedf3f3c3:/# pip3 install pulsar_client-2.5.0-cp35-cp35m-manylinux1_x86_64.whl
ERROR: pulsar_client-2.5.0-cp35-cp35m-manylinux1_x86_64.whl is not a supported wheel on this platform.
```

### Modifications

Install Use pip3.5 instead of pip3.

* Deleute no used tools

* Fix Docker command

(cherry picked from commit 0a59b4ce)

*Motivation*

pulsar-all and pulsar-standalone dont tag correct as pulsar image.
so it fails `docker/publish.sh`

*Modifications*

Tag no-repo for both latest and the release version for both pulsar-all and pulsar-standalone

*Verify this change*

After patching this change, `docker/publish.sh` works as expected.
(cherry picked from commit d2164ebf)

(cherry picked from commit a0ec11ac)

feca5bbb changed topic delete logic to delete the schema when the
topic is deleted (though this only seems to be enabled for idle topic
GC). This exposed a bug in compatibility checking whereby if the a
subscription tries to attach to the topic, even if using the same
schema as had been used previously, a compatibility exception will be
thrown.

This is because the topic still appears to have a schema, even though
there is no actual schema data, just a tombstone. I've changed the logic
to return no schema if the schema read back is a tombstone.

The issue doesn't affect producers because the check was already
correct there.

I've also updated the check for transitive compatibility to remove the
prefix of schemas before the deleted schema. Previously this was
throwing an NPE on the broker as it couldn't decode the deleted
schema.

This issue was discovered by failures in the healthcheck. The check
period (5 minutes) was longer than the GC period (60 seconds). I would
expect it to hit quite often in other scenarios also.
(cherry picked from commit d77980d2)

* Fixed the default port for https and http in admin client

* Fixed test expectation

* Removed space added by mistake

(cherry picked from commit c15c867c)

(cherry picked from commit 1b64a6e1)

### Motivation

Fixes #4655

Some compiler will have defined a macro for `DEBUG` and it will clash with the enum value name. Adding prefix to avoid the macro replacement.
(cherry picked from commit da4e9323)

* fix issue when submitting NAR via file url

* fix unit tests

* add more specific errors

* fix test

(cherry picked from commit e8025d50)

C++ client producer sendAsync() method will be blocked forever, if enough batched messages sent timeout. (#4569) (#4657)

(cherry picked from commit 2f686157)

### Motivation

Currently, the partitioned-stats API response includes stats for each partition. However, if the number of partitions and clients is large, the size of the response will be very large. In such cases, it is useful to have a query parameter to get a response that does not include stats for each partition.

```sh
$ curl -s http://localhost:8080/admin/persistent/sample/standalone/ns1/pt1/partitioned-stats | jq .

{
  "msgRateIn": 0,
  "msgThroughputIn": 0,
  "msgRateOut": 0,
  "msgThroughputOut": 0,
  "averageMsgSize": 0,
  "storageSize": 0,
  "publishers": [],
  "subscriptions": {
    "sub1": {
      "msgRateOut": 0,
      "msgThroughputOut": 0,
      "msgRateRedeliver": 0,
      "msgBacklog": 0,
      "blockedSubscriptionOnUnackedMsgs": false,
      "msgDelayed": 0,
      "unackedMessages": 0,
      "msgRateExpired": 0,
      "consumers": [],
      "isReplicated": false
    }
  },
  "replication": {},
  "metadata": {
    "partitions": 2
  },
  "partitions": {
    "persistent://sample/standalone/ns1/pt1-partition-1": {
      "msgRateIn": 0,
      "msgThroughputIn": 0,
      "msgRateOut": 0,
      "msgThroughputOut": 0,
      "averageMsgSize": 0,
      "storageSize": 0,
      "publishers": [],
      "subscriptions": {
        "sub1": {
          "msgRateOut": 0,
          "msgThroughputOut": 0,
          "msgRateRedeliver": 0,
          "msgBacklog": 0,
          "blockedSubscriptionOnUnackedMsgs": false,
          "msgDelayed": 0,
          "unackedMessages": 0,
          "msgRateExpired": 0,
          "consumers": [],
          "isReplicated": false
        }
      },
      "replication": {},
      "deduplicationStatus": "Disabled"
    },
    "persistent://sample/standalone/ns1/pt1-partition-0": {
      "msgRateIn": 0,
      "msgThroughputIn": 0,
      "msgRateOut": 0,
      "msgThroughputOut": 0,
      "averageMsgSize": 0,
      "storageSize": 0,
      "publishers": [],
      "subscriptions": {
        "sub1": {
          "msgRateOut": 0,
          "msgThroughputOut": 0,
          "msgRateRedeliver": 0,
          "msgBacklog": 0,
          "blockedSubscriptionOnUnackedMsgs": false,
          "msgDelayed": 0,
          "unackedMessages": 0,
          "msgRateExpired": 0,
          "consumers": [],
          "isReplicated": false
        }
      },
      "replication": {},
      "deduplicationStatus": "Disabled"
    }
  }
}
```

### Modifications

Added query parameter named `perPartition` to the partitioned-stats API. The default value is true.

(cherry picked from commit 977b1a85)

### Motivation

Broker throws NPE when pulsar-admin tries to fetch stats-internal for topic with reader.

```
Caused by: java.lang.NullPointerException
	at org.apache.bookkeeper.mledger.impl.ManagedCursorImpl.getProperties(ManagedCursorImpl.java:234) ~[classes/:?]
	at org.apache.pulsar.broker.service.persistent.PersistentTopic.lambda$getInternalStats$48(PersistentTopic.java:1461) ~[classes/:?]
	at java.lang.Iterable.forEach(Iterable.java:75) ~[?:1.8.0_92]
	at org.apache.pulsar.broker.service.persistent.PersistentTopic.getInternalStats(PersistentTopic.java:1446) ~[classes/:?]
	at org.apache.pulsar.broker.admin.impl.PersistentTopicsBase.internalGetInternalStats(PersistentTopicsBase.java:621) ~[classes/:?]
	at org.apache.pulsar.broker.admin.v2.PersistentTopics.getInternalStats(PersistentTopics.java:430) ~[classes/:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_92]
```
(cherry picked from commit b306552f)

(cherry picked from commit eea53b7b)

* Allows consumer retrieve the sequence id that the producer set.

* fix comments.

(cherry picked from commit d107f676)

* Improve and add authorization to function download and upload

* cleaning up

* fix bug

(cherry picked from commit 20cf7393)

(cherry picked from commit bbaf2d9e)

### Motivation

due to some issue if broker fails to complete topic-loading then getting stats of that topic blocks web-thread.

```
"pulsar-web-30-13" #242 prio=5 os_prio=0 tid=0x00002b0b3c001000 nid=0x2540 waiting on condition [0x00002b0aa7d0a000]
   java.lang.Thread.State: WAITING (parking)
        at sun.misc.Unsafe.park(Native Method)
        - parking to wait for  <0x000000072560a180> (a java.util.concurrent.CompletableFuture$Signaller)
        at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
        at java.util.concurrent.CompletableFuture$Signaller.block(CompletableFuture.java:1693)
        at java.util.concurrent.ForkJoinPool.managedBlock(ForkJoinPool.java:3323)
        at java.util.concurrent.CompletableFuture.waitingGet(CompletableFuture.java:1729)
        at java.util.concurrent.CompletableFuture.join(CompletableFuture.java:1934)
        at org.apache.pulsar.broker.admin.impl.PersistentTopicsBase.getTopicReference(PersistentTopicsBase.java:1253)
        at org.apache.pulsar.broker.admin.impl.PersistentTopicsBase.internalGetStats(PersistentTopicsBase.java:592)
        at org.apache.pulsar.broker.admin.v1.PersistentTopics.getStats(PersistentTopics.java:240)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
```
(cherry picked from commit f272df92)

(cherry picked from commit c0a57d0e)

[Client] Consumer for a single partition of a PartitionedTopic should be set with correct partitionIndex (#4591)

This PR fixes #4586 by getting `partitionIndex` from topic name.
(cherry picked from commit 5de6e6ba)

(cherry picked from commit fd5d5c2f)

(cherry picked from commit 20d24996)