[IGNITE-6277] Convert WAL to human readable form

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.1
• Fix Version/s: 2.3
• Component/s: persistence
• Assignee: Alexey Goncharuk
• Reporter: Eduard Shangareev
• Created: 06/Sep/17 10:22
• Updated: 10/Jan/18 14:24
• Resolved: 15/Sep/17 10:51

Description

Now there is no way to make wal visible or understandable without coding.

I propose to write utility which would convert any given compatible WAL to textual form.

Something like this:

[W] InsertRecord [idx=19, io=H2ExtrasLeafIO[ver=1], rightId=0000000000000000, super=PageDeltaRecord [grpId=2141373875, pageId=0002ffff00000011, super=WALRecord [size=61, chainSize=0, pos=FileWALPointer [idx=0, fileOffset=2504497, len=61, forceFlush=false], type=BTREE_PAGE_INSERT]]]
[W] DataRecord [writeEntries=[DataEntry [op=CREATE, writeVer=GridCacheVersion [topVer=116006687, order=0, nodeOrder=1], partId=29, partCnt=33]], super=WALRecord [size=171, chainSize=0, pos=FileWALPointer [idx=0, fileOffset=2504558, len=171, forceFlush=false], type=DATA_RECORD]]
[W] PagesListRemovePageRecord [rmvdPageId=0001000c0000002f, pageId=0001000c0000000a, grpId=-1368047377, super=PageDeltaRecord [grpId=-1368047377, pageId=0001000c0000000a, super=WALRecord [size=37, chainSize=0, pos=FileWALPointer [idx=0, fileOffset=2504729, len=37, forceFlush=false], type=PAGES_LIST_REMOVE_PAGE]]]
[W] DataPageInsertRecord [super=PageDeltaRecord [grpId=-1368047377, pageId=0001000c0000002f, super=WALRecord [size=76, chainSize=0, pos=FileWALPointer [idx=0, fileOffset=2504766, len=76, forceFlush=false], type=DATA_PAGE_INSERT_RECORD]]]
[W] PagesListAddPageRecord [dataPageId=0001000c0000002f, super=PageDeltaRecord [grpId=-1368047377, pageId=0001000c0000000b, super=WALRecord [size=37, chainSize=0, pos=FileWALPointer [idx=0, fileOffset=2504842, len=37, forceFlush=false], type=PAGES_LIST_ADD_PAGE]]]
[W] DataPageSetFreeListPageRecord [freeListPage=281526516318219, super=PageDeltaRecord [grpId=-1368047377, pageId=0001000c0000002f, super=WALRecord [size=37, chainSize=0, pos=FileWALPointer [idx=0, fileOffset=2504879, len=37, forceFlush=false], type=DATA_PAGE_SET_FREE_LIST_PAGE]]]

Issue Links

• is related to: IGNITE-5558 Add ability to read WAL outside of an Ignite node
• is related to: IGNITE-7378 WAL converter: add records statistic to WAL reader dev-util
• is related to: IGNITE-6421 Ignite WAL reader: add shell script to start converter
• mentioned in: Page Loading...