Record query consumption into fe audit log. Its basic mode of work is as follows, one of instance of parent plan is responsible for accumulating sub plan's consumption and send to it's parent, BE coordinator will get total consumption because it's a single instance.
Help to locate big query when system overload, by checking consumptions of running parts of current all queries or specified one query. Its basic mode of work is as follows: firstly trigger BE to report RuntimeProfiles, and wait a moment. secondly caculate consumptions with RuntimeProfiles reported by BE. The consumptions supported by it are the cost of running ExecNode in query when call it.
1. Add broker load error hub
A broker load error hub will collect error messages in load process and saves them as a file to the specified remote storage via broker. In case that in broker/min/streaming load process, user may not be able to access the error log file in Backend directly.
We also add a new header option: 'enable_hub' in streaming load request, and default is false. Because if we enable the broker load error hub, it will significantly slow down the processing speed of streaming load, due to the visit of remote storage via broker. So use can disable the error load hub using this header option, to avoid slowing down the load speed.
2. Show load error logs by using SHOW LOAD WARNINGS stmt
We also provide a more easy way to get load error logs. We implement 'SHOW LOAD WARNINGS ON 'url'' stmt to show load error logs directly. The 'url' in stmt is provided in 'SHOW LOAD' stmt.
eg:
show load warnings on "http://192.168.1.1:8040/api/_load_error_log?file=__shard_2/error_log_xxx";
3. Support now() function in broker load
User can mapping a column to now() in broker load stmt, which means this column will be filled with time when the ETL started.
4. Support more types of wildcard in broker load
Currently, we only support wildcard '*' to match the file names. wildcard like '/path/to/20190[1-4]*' is not support.
1. Print broker address for debug.
2. Do not letting backup job cancelled if it already in state UPLOAD_INFO.
3. Cancel task on Backends when job is cancelled.
4. Show detail progress of backup and restore job.
5. Make 'show snapshot' result more readable.
6. Change upload and download thread num of backup and restore in Backend to 1.
* Add UserFunctionCache to cache UDF's library
This patch replace LibCache with UserFunctionCache. LibCache use HDFS
URL to identify a UDF's Library, and when BE process restart all of
downloaded library should be loaded another time. We use function id
corresponding to a library, and when process restart, all downloaded
libraries can be loaded without another downloading.
* update
1. add a needSchedulerTasksQueue in LoadManager: the RoutineLoadTaskScheduler will poll task from this queue and schedule task.
2. add a frontend interface named rlTaskCommit: commit txn, update offset and renew a task for the same partitions
3. add extra property in transaction state: in rlTaskCommit, extra property which looks like {"job_id": xxx, "progress": xxx}
When fe initialize routine load job meta from logs, all of txn state which related to routine load job will be used for initializing progress of job.
Add a TxnStateChangeListener interface for transaction
1. onCommitted , onAborted, beforeAborted will be called by different type of txn
2. RoutineLoadJob will update job progress and renew a task when onCommitted callback
3. Add TxnStateChangeListener into TransactionState
4. set transactionState to committed will call onCommitted callback if callback is not null
5. set transactionState to aborted will call beforeAborted and onAborted
6. beforeAborted in RoutineLoadJob will check if there is related task when TxnStatusChangeReason is TIMEOUT. It will prevent abort when there is a related task by throw TransactionException
7. Other reason of abort will not prevent abort. The onAborted will be call and job state will be change to paused
Change extra to TxnCommitAttachment in TLoadTxnCommitRequest
1. The KAFKA source of TTxnSourceType means that this is a routine load task commit. And the TRLTaskTxnCommitAttachment is the commitInfo of this task.
2. TRLTaskTxnCommitAttachment will be convert to RLTaskTxnCommitAttachment which include progress of this task, task id, numOfErrorData etc.
Add param TxnCommitAttachment into commitTransaction
1. The TxnCommitAttachment will be updated in commitTransaction
Step1: updateBeIdTaskMaps, remove unavailable BE and add new alive BE
Step2: process timeout tasks, if a task has already been allocated to BE but not finished before DEFAULT_TASK_TIMEOUT, it will be discarded.
At the same time, the partitions belong to old tasks will be allocated to a new task. The new task with a signature will be added in the queue of needSchedulerRoutineLoadTask.
Step3: process all needSchedulerRoutineLoadTasks, allocate task to BE. The task will be executed by BE.
Add path info of replica in catalog
Also fix a bug that when calling check_none_row_oriented_table,
store is null, it cannot be used to create table.
Instead, OLAPHeader can be used to get storage type information.
1. Remove all design docs. They will be pushed again after modification.
2. Add streaming load and privilege help docs.
3. Rename palo*.py to doris*.py in gensrc/script/.
* Add streaming load feature. You can execute 'help stream load;' to see more information.
Changed:
* Loading phase of a certain table can be parallelized, to reduce the load job execution time when multi load jobs to a single table.
* Using RocksDB to save the header info of tablets in Backends, to reduce the IO operations and increate speeding of restarting.
Fixed:
* A lot of bugs fixed.
Added: Support getting column size and precision info of table or view using JDBC.
Updated: Change the promethues type name GAUGE to lowercase, to fit the latest promethues version.
Updated: Backend ip saved in FE will be compared with BE's local ip when doing heartbeat, to avoid false positive heartbeat response.
Updated: Using version_num of tablet instead of calculating nice value to select cumulative compaction candicates.
Fixed: Predicates should not be pushed down to subquery which contains limit clause.
Fixed: Fix the formula of calculating BE load score.
Fixed: Fix a bug that in some edge cases, non-master Fontend may wait for a unnecessary long timeout after forwarding cmd to Master FE.
Fixed: A bug that granting privs on more than one table does not work.
Fixed: Support 'Insert into' table which contains HLL columns.
Fixed: ExportStmt' toSql() method may throw NullPointer Exception if table does not exist.
Fixed: Remove unnecessary 'get capacity' operation to avoid IO impact.
Internal commit id: merge to c16bd603a53dfe2089ff95704c698a738c317792
1. No one can set root password expect for root user itself
2. NODE_PRIV cannot be granted.
3. ADMIN_PRIV and GRANT_PRIV can only be granted or revoked on *.*
4. No one can modifly privs of default role 'operator' and 'admin'.
5. No user can be granted to role 'operator'.
Fixed: the running load limit should not be applied to replay logic. It will cause replay or loading image fail.
Changed: optimize the problem of too many directories under mini load directory.
Fixed: missing password and auth check when handling mini load request in Frontend.
Fixed: DomainResolver should start after Frontends transfer to a certain ROLE, not in Catalog construction methods.
Fixed: a stupid bug that no one can set password for root user... fix it: only root user can set password for root.
Fixed: read null data twice
When reading data with a null value, in some cases, the same data will be read twice by the storage engine,
resulting in a wrong result.The reason for this problem is that when splitting,
and the start key is the minimum value, the data with null is read.
Fixed: add a flag to prevent DomainResovler thread start twice.
Fixed: fixed a mem leak of using ByteBuf when parsing auth info of http request.
Fixed: add a new config 'disable_hadoop_load', default is false, set to true to disable hadoop load.
Changed: add detail error msg of submitting hadoop load job in show load result.
Fixed: Backend process should be crashed if failed to saving header.
Added: exposure backend info to user when encounter error on Backend. for debugging it more convenient.
Fixed: Should remove fd from map when inputstream or outputstream is closed in Broker process.
Fixed: Change all files' LF to unix format.
Internal commit id: merge from dfcd0aca18eed9ff99d188eb3d01c60d419be1b8
2. add 2 new proc '/current_queries' and '/current_backend_instances' to monitor the current running queries.
3. add a manual compaction api on Backend to trigger cumulative or base compaction manually.
4. add Frontend config 'max_bytes_per_broker_scanner' to limit to bytes per one broker scanner. This is to limit the memory cost of a single broker load job
5. add Frontend config 'max_unfinished_load_job' to limit load job number: if number of running load jobs exceed the limit, no more load job is allowed to be submmitted.
6. a log of bug fixed
1. Apache HDFS broker support HDFS HA and Hadoop kerberos authentication.
2. New Backup and Restore function. Use Fs Broker to backup your data to HDFS or restore them from HDFS.
3. Table-Level Privileges. Grant fine-grained privileges on table-level to specified user.
4. A lot of bugs fixed.
5. Performance improvement.
1. Implement Backend http server using libevent instead of mongoose.
2. Remove Old Hypertable rpc framework, use brpc instead.
3. Change rpc from FE to BE to brpc.
4. Fs broker support HDFS HA.
5. add more metrics to monitor.
6. Lots of bug fixed.
merge to 2d4cc9e1358c980b4f726e17d036639bc31127aa (#188)
contains:
first_value with PRECEDING LEFT and NON-PRECEDING RIGHT rewrite error and count* materialize SlotDescriptor
error when referring to the slot of the current query and subquery Simultaneously.
fix join and count(*) materialize SlotDescriptor error.
fix materialize scannode's conjuncts bug.
remove no used materialization work.
it have to evaluate orderby in subquery because we limit the number of rows returned by subquery.
the method of judging limit is wrong.
user info is missing when retrying to call load check.
It's wrong to pass aggregate function when it's param is not materialized.
InsertStmt does not pass the session param to observer.
In case that we want to clone a replica with version X, but a replica with stale version(less than X) is already in the dest backend.
This will leads the clone task to success directly, which is not what we expected.
Adding version check when doing the clone task and try to drop the replica with stale version
* cluster can acquire more backends in same host
* compile failed
* count* 's subquery with orderby exec error
* modify show processlist result and check name format error
* merge log and add cancel cluster for root, show backends for users in cluster
* returns null when the param does not match
* update UpdateClusterAndBackends to BackendIdsUpdateInfo
* correct Licenses
