Apache
/
hadoop
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
9,277 Commits 326 Branches 371 Tags 1.5 GiB
Commit Graph

1978 Commits

Author SHA1 Message Date
Wangda Tan 2c80a3fe19 Moved YARN-3434. (Interaction between reservations and userlimit can result in significant ULF violation.) From 2.8.0 to 2.7.1 
(cherry picked from commit 1952f88889)
 2015-05-11 15:22:25 -07:00
Junping Du a1a7deebf8 YARN-3587. Fix the javadoc of DelegationTokenSecretManager in yarn, etc. projects. Contributed by Gabor Liptak. 
(cherry picked from commit 7e543c27fa)
 2015-05-11 05:28:25 -07:00
Karthik Kambatla 3cf4f24a9f YARN-3395. FairScheduler: Trim whitespaces when using username for queuename. (Zhihai Xu via kasha) 
(cherry picked from commit a60f78e98e)
 2015-05-09 15:41:49 -07:00
Karthik Kambatla e8dd0bc4fd YARN-1287. Consolidate MockClocks. (Sebastian Wong and Anubhav Dhoot via kasha) 
(cherry picked from commit 70fb37cd79)
 2015-05-09 14:35:13 -07:00
Xuan acb342b77c YARN-1912. ResourceLocalizer started without any jvm memory control. 
Contributed by Masatake Iwasaki

(cherry picked from commit 6471d18bc7)
 2015-05-08 20:02:23 -07:00
Xuan fc980247a6 YARN-3602. TestResourceLocalizationService.testPublicResourceInitializesLocalDir fails Intermittently due to IOException from cleanup. Contributed by zhihai xu 
(cherry picked from commit 333f9a896d)
 2015-05-08 17:54:46 -07:00
Zhijie Shen ef096599c3 YARN-2206. Updated document for applications REST API response examples. Contributed by Kenji Kikushima and Brahma Reddy Battula. 
(cherry picked from commit 08f0ae403c)
 2015-05-08 16:41:29 -07:00
Karthik Kambatla a7d8f21630 YARN-3271. FairScheduler: Move tests related to max-runnable-apps from TestFairScheduler to TestAppRunnability. (nijel via kasha) 
(cherry picked from commit 2fb44c8aaf)
 2015-05-08 16:40:36 -07:00
Karthik Kambatla 21a07769d4 YARN-1050. Document the Fair Scheduler REST API. (Kenji Kikushima and Roman Shaposhnik via kasha) 
(cherry picked from commit 96473bdc2b)
 2015-05-08 16:31:30 -07:00
Robert Kanter 453488cff2 YARN-3473. Fix RM Web UI configuration for some properties (rchiang via rkanter) 
(cherry picked from commit 5658998845)
 2015-05-08 16:23:20 -07:00
Jason Lowe 743ca1a056 YARN-3476. Nodemanager can fail to delete local logs if log aggregation fails. Contributed by Rohith 
(cherry picked from commit 25e2b02122)
 2015-05-08 22:46:34 +00:00
Jian He 5a1c2fed34 YARN-3604. Fixed ZKRMStateStore#removeApplication to also disable watch. Contributed Zhihai Xu 
(cherry picked from commit d0b73287c2)
 2015-05-08 15:13:43 -07:00
Xuan 8d07116266 YARN-2331. Distinguish shutdown during supervision vs. shutdown for 
rolling upgrade. Contributed by Jason Lowe

(cherry picked from commit 088156de43)
 2015-05-08 15:11:55 -07:00
Vinod Kumar Vavilapalli 24c8d3e54b YARN-3018. Unified the default value for the configuration property yarn.scheduler.capacity.node-locality-delay in code and default xml file. Contributed by Nijel SF. 
(cherry picked from commit f7a74d2491)
 2015-05-08 14:45:55 -07:00
Wangda Tan f8807839c6 YARN-3593. Add label-type and Improve "DEFAULT_PARTITION" in Node Labels Page. (Naganarasimha G R via wangda) 
(cherry picked from commit f55d21d894)
 2015-05-08 12:05:25 -07:00
Thomas Graves 638feaaa35 YARN-20. More information for yarn.resourcemanager.webapp.address in yarn-default.xml (Bartosz Ługowski vai tgraves) 
(cherry picked from commit f0f5e3c075)
 2015-05-08 17:22:33 +00:00
Thomas Graves 547b069887 YARN-3600. AM container link is broken (Naganarasimha G R via tgraves 
(cherry picked from commit 5d708a4725)
 2015-05-08 16:37:20 +00:00
Robert (Bobby) Evans 28e0593b96 YARN-644: Basic null check is not performed on passed in arguments before using them in ContainerManagerImpl.startContainer 
(cherry picked from commit bcf2890502)
 2015-05-08 11:11:53 -05:00
Devaraj K bf8be56292 YARN-2784. Make POM project names consistent. Contributed by Rohith. 2015-05-08 19:26:11 +05:30
Jason Lowe bcb863b156 YARN-3554. Default value for maximum nodemanager connect wait time is too high. Contributed by Naganarasimha G R 
(cherry picked from commit 9757864fd6)
 2015-05-08 13:47:48 +00:00
Tsuyoshi Ozawa 5ddc3adb0d YARN-3169. Drop YARN's overview document. Contributed by Brahma Reddy Battula. 
(cherry picked from commit b419c1b2ec)
 2015-05-08 19:58:47 +09:00
Tsuyoshi Ozawa b1f3590b22 YARN-3589. RM and AH web UI display DOCTYPE wrongly. Contbituted by Rohith. 
(cherry picked from commit f26700f287)
 2015-05-08 17:13:56 +09:00
Tsuyoshi Ozawa 1ae8bf5b21 MAPREDUCE-6284. Add Task Attempt State API to MapReduce Application Master REST API. Contributed by Ryu Kobayashi. 
(cherry picked from commit d18f10ad1b)
 2015-05-08 16:00:41 +09:00
Devaraj K 0d286d1041 YARN-3358. Audit log not present while refreshing Service ACLs. 
Contributed by Varun Saxena.

(cherry picked from commit ef3d66d462)
 2015-05-08 12:15:45 +05:30
Devaraj K dce2381dc4 YARN-3592. Fix typos in RMNodeLabelsManager. Contributed by Sunil G. 
(cherry picked from commit a28cd02ba0)
 2015-05-08 10:55:53 +05:30
Akira Ajisaka c7f3dd1eb3 YARN-3572. Correct typos in WritingYarnApplications.md. Contributed by Gabor Liptak. 
(cherry picked from commit a521b50955)
 2015-05-08 13:25:07 +09:00
Akira Ajisaka 170f1b0afd YARN-1832. Fix wrong MockLocalizerStatus#equals implementation. Contributed by Hong Zhiguo. 
(cherry picked from commit b167fe7605)
 2015-05-08 11:15:28 +09:00
Jian He d817fbb34d YARN-2918. RM should not fail on startup if queue's configured labels do not exist in cluster-node-labels. Contributed by Wangda Tan 
(cherry picked from commit f489a4ec96)
 2015-05-07 17:36:24 -07:00
Jian He c35114a1e6 YARN-3584. Fixed attempt diagnostics format shown on the UI. Contributed by nijel 
(cherry picked from commit b88700dcd0)
 2015-05-07 13:56:25 -07:00
Zhijie Shen bb035ff087 YARN-3448. Added a rolling time-to-live LevelDB timeline store implementation. Contributed by Jonathan Eagles. 
(cherry picked from commit daf3e4ef8b)
 2015-05-07 10:10:13 -07:00
Junping Du 684a5a6aeb YARN-3523. Cleanup ResourceManagerAdministrationProtocol interface audience. Contributed by Naganarasimha G R 
(cherry picked from commit 8e991f4b1d)
 2015-05-07 05:40:13 -07:00
Akira Ajisaka 67bebabb21 YARN-3577. Misspelling of threshold in log4j.properties for tests. Contributed by Brahma Reddy Battula. 
(cherry picked from commit 995f1b5831fc33042de90267a689333dc110c4c3)
 2015-05-07 13:33:17 +09:00
Vinod Kumar Vavilapalli d127dd64a7 YARN-3385. Fixed a race-condition in ResourceManager's ZooKeeper based state-store to avoid crashing on duplicate deletes. Contributed by Zhihai Xu. 
(cherry picked from commit 4c7b9b6abe)
 2015-05-06 17:52:13 -07:00
Junping Du 79babc4bd2 YARN-3580. [JDK8] TestClientRMService.testGetLabelsToNodes fails. Contributed by Robert Kanter. 
(cherry picked from commit 31b627b2a8)
 2015-05-06 16:51:56 -07:00
Robert Kanter 28b40aca98 YARN-3491. PublicLocalizer#addResource is too slow. (zxu via rkanter) 
(cherry picked from commit b72507810a)

Conflicts:
	hadoop-yarn-project/CHANGES.txt
 2015-05-06 14:20:08 -07:00
Jian He f8488b5aeb YARN-3301. Fixed the format issue of the new RM attempt web page. Contributed by Xuan Gong 
(cherry picked from commit 0d3188fd25)
 2015-05-06 13:51:44 -07:00
Vinod Kumar Vavilapalli da410ea02a YARN-3243. Moving CHANGES.txt entry to the right release. 
(cherry picked from commit 185e63a726)
 2015-05-06 10:44:19 -07:00
Xuan a0445eae5c YARN-3582. NPE in WebAppProxyServlet. Contributed by Jian He 
(cherry picked from commit a583a40693)
 2015-05-05 21:43:35 -07:00
Jian He eb0c6d2ee7 YARN-3343. Increased TestCapacitySchedulerNodeLabelUpdate#testNodeUpdate timeout. Contributed by Rohith Sharmaks 
(cherry picked from commit e4c3b52c89)
 2015-05-05 11:34:11 -07:00
Xuan 02cdcaec58 YARN-2123. Progress bars in Web UI always at 100% due to non-US locale. 
Contributed by Akira AJISAKA

(cherry picked from commit b7dd3a4f04)
 2015-05-05 10:45:18 -07:00
Junping Du 6ea007ba91 YARN-3396. Handle URISyntaxException in ResourceLocalizationService. (Contributed by Brahma Reddy Battula) 
(cherry picked from commit 3810242062)
 2015-05-05 10:19:16 -07:00
Jason Lowe 0f30913ea8 YARN-3552. RM Web UI shows -1 running containers for completed apps. Contributed by Rohith 
(cherry picked from commit 9356cf8676)
 2015-05-05 13:43:57 +00:00
Jian He f71c49c5e3 YARN-2725. Added test cases of retrying creating znode in ZKRMStateStore. Contributed by Tsuyoshi Ozawa 
(cherry picked from commit d701acc9c6)
 2015-05-04 16:17:01 -07:00
Wangda Tan 4e77ee2f6f YARN-3375. NodeHealthScriptRunner.shouldRun() check is performing 3 times for starting NodeHealthScriptRunner (Devaraj K via wangda) 
(cherry picked from commit 71f4de220c)
 2015-05-04 16:02:57 -07:00
Allen Wittenauer 02e650248d YARN-2980. Move health check script related functionality to hadoop-common (Varun Saxena via aw) 
(cherry picked from commit d4ac6822e1)

Conflicts:
	hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/NodeManager.java
 2015-05-04 16:00:20 -07:00
Jason Lowe 99b49a8181 YARN-3097. Logging of resource recovery on NM restart has redundancies. Contributed by Eric Payne 
(cherry picked from commit 8f65c793f2)
 2015-05-04 10:32:33 -05:00
Tsuyoshi Ozawa f382602de1 YARN-1993. Cross-site scripting vulnerability in TextView.java. Contributed byKenji Kikushima. 
(cherry picked from commit e8d0ee5fc9)
 2015-05-03 10:51:39 +09:00
Junping Du 8068e79989 YARN-2454. Fix compareTo of variable UNBOUNDED in o.a.h.y.util.resource.Resources. Contributed by Xu Yang. 
(cherry picked from commit 57d9a972cb)
 2015-05-02 10:20:30 -07:00
Gera Shegalov 9325dd863c YARN-2893. AMLaucher: sporadic job failures due to EOFException in readTokenStorageStream. (Zhihai Xu via gera) 
(cherry picked from commit f8204e241d)
 2015-05-01 19:04:48 -07:00
Wangda Tan 4151e5729a YARN-3006. Improve the error message when attempting manual failover with auto-failover enabled. (Akira AJISAKA via wangda) 
(cherry picked from commit 7d46a806e7)
 2015-05-01 16:44:49 -07:00
Robert Kanter 32b3b8e2ef YARN-3363. add localization and container launch time to ContainerMetrics at NM to show these timing information for each active container. (zxu via rkanter) 
(cherry picked from commit ac7d152901)
 2015-05-01 16:39:59 -07:00
Vinod Kumar Vavilapalli 90f6e8c90f YARN-2619. Added NodeManager support for disk io isolation through cgroups. Contributed by Varun Vasudev and Wei Yan. 
(cherry picked from commit 1b3b9e5c31)
 2015-04-30 21:43:22 -07:00
Zhijie Shen c9ee316045 YARN-3544. Got back AM logs link on the RM web UI for a completed app. Contributed by Xuan Gong. 
(cherry picked from commit 21bf2cdcb77f69abc906e6cd401a8fb221f250e9)
 2015-04-30 13:06:46 -07:00
Wangda Tan 100b41add6 YARN-3564. Fix TestContainerAllocation.testAMContainerAllocationWhenDNSUnavailable fails randomly. (Jian He via wangda) 
(cherry picked from commit e2e8f77118)
 2015-04-30 11:06:47 -07:00
Jian He a7a5737bc4 YARN-3533. Test: Fix launchAM in MockRM to wait for attempt to be scheduled. Contributed by Anubhav Dhoot 
(cherry picked from commit 4c1af156ae)
 2015-04-29 14:51:04 -07:00
tgraves 2e13183f60 YARN-3517. RM web ui for dumping scheduler logs should be for admins only (Varun Vasudev via tgraves) 
(cherry picked from commit 2e215484bd)
 2015-04-29 21:27:16 +00:00
Karthik Kambatla 4cc38df7de YARN-3485. FairScheduler headroom calculation doesn't consider maxResources for Fifo and FairShare policies. (kasha) 
(cherry picked from commit 8f82970e0c)
 2015-04-28 21:03:12 -07:00
Wangda Tan 8ee632caa7 YARN-2740. Fix NodeLabelsManager to properly handle node label modifications when distributed node label configuration enabled. (Naganarasimha G R via wangda) 
(cherry picked from commit db1b674b50)
 2015-04-27 16:42:36 -07:00
Karthik Kambatla d2d8bc243b Update CHANGES.txt - Pulled in YARN-3465, YARN-3516, and YARN-3464 to branch-2.7 (for 2.7.1) 
(cherry picked from commit 32cd2c8d42)
 2015-04-27 13:44:06 -07:00
Xuan 0e8af401d7 YARN-3530. ATS throws exception on trying to filter results without 
otherinfo. Contributed by zhijie shen

(cherry picked from commit 7f07c4d810)
 2015-04-27 10:37:40 -07:00
Karthik Kambatla 4045c41afe YARN-3464. Race condition in LocalizerRunner kills localizer before localizing all resources. (Zhihai Xu via kasha) 
(cherry picked from commit 47279c3228)
 2015-04-26 09:14:12 -07:00
Vinod Kumar Vavilapalli db1a33e956 Moving YARN-3351, YARN-3382, YARN-3472, MAPREDUCE-6238 to the 2.7.1 CHANGES.txt 
sections given the recent merge into branch-2.7.

(cherry picked from commit 2f82ae042a)
 2015-04-24 17:20:02 -07:00
Jian He 9bf09b334d YARN-2498. Respect labels in preemption policy of capacity scheduler for inter-queue preemption. Contributed by Wangda Tan 
(cherry picked from commit d497f6ea2b)
 2015-04-24 17:03:57 -07:00
Tsuyoshi Ozawa 3884948d6c YARN-3406. Display count of running containers in the RM's Web UI. Contributed by Ryu Kobayashi. 
(cherry picked from commit 4a3dabd94f)
 2015-04-25 07:17:42 +09:00
Jason Lowe bd750f160b Fix commit version for YARN-3537 
(cherry picked from commit 78fe6e57c7)
 2015-04-24 22:09:01 +00:00
Jason Lowe cf4154676b YARN-3537. NPE when NodeManager.serviceInit fails and stopRecoveryStore invoked. Contributed by Brahma Reddy Battula 
(cherry picked from commit 5e093f0d40)
 2015-04-24 22:04:03 +00:00
Akira Ajisaka 73ba3ebe7c YARN-3444. Fix typo capabililty. Contributed by Gabor Liptak. 
(cherry picked from commit 5ce3a77f3c)
 2015-04-25 06:09:03 +09:00
Jian He 0583c27fb1 YARN-3387. Previous AM's container completed status couldn't pass to current AM if AM and RM restarted during the same time. Contributed by Sandflee 
(cherry picked from commit d03dcb9635)
 2015-04-24 12:14:17 -07:00
Xuan c184466939 YARN-3511. Add errors and warnings page to ATS. Contributed by Varun Vasudev 
(cherry picked from commit eee9facbba)
 2015-04-24 09:43:35 -07:00
Xuan 8f6053ae51 YARN-3516. killing ContainerLocalizer action doesn't take effect when 
private localizer receives FETCH_FAILURE status. Contributed by zhihai
xu

(cherry picked from commit 0b3f8957a8)
 2015-04-23 16:41:52 -07:00
Vinod Kumar Vavilapalli 0ec6e7e7f5 YARN-3413. Changed Nodelabel attributes (like exclusivity) to be settable only via addToClusterNodeLabels but not changeable at runtime. (Wangda Tan via vinodkv) 
(cherry picked from commit f5fe35e297)
 2015-04-23 11:25:30 -07:00
Jian He 48d8d88245 YARN-3522. Fixed DistributedShell to instantiate TimeLineClient as the correct user. Contributed by Zhijie Shen 
(cherry picked from commit aa4a192feb)
 2015-04-23 11:07:54 -07:00
Wangda Tan 9692bcc2c8 YARN-3319. Implement a FairOrderingPolicy. (Craig Welch via wangda) 
(cherry picked from commit 395205444e)
 2015-04-23 10:48:00 -07:00
tgraves 1cd2fcf25d YARN-3434. Interaction between reservations and userlimit can result in significant ULF violation 
(cherry picked from commit 189a63a719)
 2015-04-23 14:49:24 +00:00
Steve Loughran 63ccb9167e YARN-2605. [RM HA] Rest api endpoints doing redirect incorrectly. (Xuan Gong via stevel) 2015-04-23 09:22:23 +01:00
Vinod Kumar Vavilapalli 04783b0402 YARN-3366. Enhanced NodeManager to support classifying/shaping outgoing network bandwidth traffic originating from YARN containers Contributed by Sidharta Seethana. 
(cherry picked from commit a100be685c)
 2015-04-22 17:36:55 -07:00
Junping Du 8de6045842 New parameter of CLI for decommissioning node gracefully in RMAdmin CLI. Contributed by Devaraj K 
(cherry picked from commit fad9d7e85b)
 2015-04-22 10:08:16 -07:00
Akira Ajisaka f469f9af2d YARN-3410. Addendum fix for compilation error. Contributed by Rohith. 
(cherry picked from commit b08908ae5e)
 2015-04-22 17:48:55 +09:00
Jian He 613a783380 YARN-3503. Expose disk utilization percentage and bad local and log dir counts in NM metrics. Contributed by Varun Vasudev 
(cherry picked from commit 674c7ef649)

Conflicts:
	hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/NodeManager.java
 2015-04-21 21:06:06 -07:00
Jian He dc4698bb33 YARN-3494. Expose AM resource limit and usage in CS QueueMetrics. Contributed by Rohith Sharmaks 
(cherry picked from commit bdd90110e6)
 2015-04-21 20:34:30 -07:00
Wangda Tan 8a9599fb9e YARN-3410. YARN admin should be able to remove individual application records from RMStateStore. (Rohith Sharmaks via wangda) 2015-04-21 17:47:27 -07:00
Tsuyoshi Ozawa 0b87ae27aa YARN-3495. Confusing log generated by FairScheduler. Contributed by Brahma Reddy Battula. 
(cherry picked from commit 105afd5477)
 2015-04-22 05:48:16 +09:00
Vinod Kumar Vavilapalli 27fc4fb998 Set the release date for 2.7.0 
(cherry picked from commit d52de61544)
 2015-04-20 20:18:01 -07:00
Wangda Tan d0ea982e64 YARN-3463. Integrate OrderingPolicy Framework with CapacityScheduler. (Craig Welch via wangda) 
(cherry picked from commit 44872b76fc)
 2015-04-20 17:13:01 -07:00
Jian He 6b454aacc3 YARN-3497. ContainerManagementProtocolProxy modifies IPC timeout conf without making a copy. Contributed by Jason Lowe 
(cherry picked from commit f967fd2f21)

Conflicts:
	hadoop-yarn-project/CHANGES.txt
 2015-04-20 10:40:09 -07:00
Jian He 6f70f1b1af YARN-3136. Fixed a synchronization problem of AbstractYarnScheduler#getTransferredContainers. Contributed by Sunil G 
(cherry picked from commit 497c86b485)
 2015-04-18 12:47:30 -07:00
Wangda Tan 3316cd4357 YARN-3487. CapacityScheduler scheduler lock obtained unnecessarily when calling getQueue (Jason Lowe via wangda) 
(cherry picked from commit f47a5763ac)
 2015-04-17 17:23:00 -07:00
Wangda Tan e7cbecddc3 YARN-3493. RM fails to come up with error "Failed to load/recover state" when mem settings are changed. (Jian He via wangda) 
(cherry picked from commit f65eeb412d)
 2015-04-17 17:15:16 -07:00
Jian He 9827da95bc YARN-3451. Display attempt start time and elapsed time on the web UI. Contributed by Rohith Sharmaks 
(cherry picked from commit 6779467ab6)
 2015-04-17 15:57:36 -07:00
Jian He 57eb07d34b YARN-2696. Queue sorting in CapacityScheduler should consider node label. Contributed by Wangda Tan 
(cherry picked from commit d573f09fb9)
 2015-04-17 13:37:34 -07:00
Junping Du b244701fad YARN-1402. Update related Web UI and CLI with exposing client API to check log aggregation status. Contributed by Xuan Gong. 
(cherry picked from commit 1db355a875)
 2015-04-17 13:20:27 -07:00
Jian He 42cf8e0554 YARN-3021. YARN's delegation-token handling disallows certain trust setups to operate properly over DistCp. Contributed by Yongjun Zhang 
(cherry picked from commit bb6dde68f1)
 2015-04-16 19:44:32 -07:00
Akira Ajisaka 51c458a5c4 MAPREDUCE-6300. Task list sort by task id broken. Contributed by Siqi Li. 
(cherry picked from commit 1fa8075794)
 2015-04-16 10:06:03 -05:00
Jian He 6fed2c2a79 YARN-3354. Add node label expression in ContainerTokenIdentifier to support RM recovery. Contributed by Wangda Tan 
(cherry picked from commit 1b89a3e173)
 2015-04-15 14:03:29 -07:00
Jian He 58f99b740a YARN-3404. Display queue name on application page. Contributed by Ryu Kobayashi 
(cherry picked from commit b2e6cf607f)
 2015-04-15 13:53:24 -07:00
Tsuyoshi Ozawa e977247f3e YARN-3326. Support RESTful API for getLabelsToNodes. Contributed by Naganarasimha G R. 
(cherry picked from commit e48cedc663)
 2015-04-15 14:04:24 -05:00
Wangda Tan 89a7c98436 YARN-3318. Create Initial OrderingPolicy Framework and FifoOrderingPolicy. (Craig Welch via wangda) 
(cherry picked from commit 5004e75332)
 2015-04-15 09:57:52 -07:00
Harsh J 01af29106a YARN-3462. Patches applied for YARN-2424 are inconsistent between trunk and branch-2. Contributed by Naganarasimha G R. 2015-04-15 09:41:43 +05:30
Tsuyoshi Ozawa 3daca4f040 YARN-3436. Fix URIs in documantion of YARN web service REST APIs. Contributed by Bibin A Chundatt. 
(cherry picked from commit 05007b45e5)
 2015-04-14 14:14:17 -05:00
Jian He 9ebbf1bfce YARN-3361. CapacityScheduler side changes to support non-exclusive node labels. Contributed by Wangda Tan 
(cherry picked from commit 0fefda645b)
 2015-04-14 11:46:35 -07:00